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Uplatz's Java Bundle course consists of 3 courses on Java Programming and Web Development with Java:
 
1. Java Programming Basics (Core Java)
2. Java Server Pages (JSP)
3. Java Servlets
 
JAVA PROGRAMMING BASICS :  
JavaServer Pages (JSP) technology provides an easy way to create dynamic web pages. JSP uses a component-based approach that allows web developers to easily combine static HTML for look-and-feel with Java components for dynamic features. The simplicity of this component-based model, combined with the cross-platform power of Java, allows a web development environment with enormous potential. 
 
JAVA SERVER PAGES :
JavaServer Pages shows how to develop Java-based web applications without having to be a hardcore programmer. Web page authors will benefit from the chapters on generating dynamic content, handling session information, accessing databases, authenticating users, and personalizing content. In the programming-oriented chapters, Java programmers learn how to create Java components and custom JSP tags for web authors to use in JSP pages.
 
JAVA SERVELETS: 
Servlet is a Java class which responds to a network request. This is mostly an HTTP request. Java servlets are used to create web applications. They run in servlet containers such as Tomcat or Jetty. Modern-day Java web development uses frameworks that are built on top of servlets. For instance, Spring or Vaadin frameworks use servlets.
 
Java servlets can be defined in many ways:
 
·         In simple terms, Servlet is a server-side driven technology used to create dynamic websites. The Servlet receives a request from the clients and generates a response based on that request.
 
·         Java Servlets are programs which run on the web server and act as a middle layer between a request coming from the web browser (client) and database on the HTTP server.

Course/Topic 1 - Java Programming - all lectures

  • In this video you will learn the introduction to Java programming. This tutorial explains the installation and usage of the Java programming language. It also contains examples for standard programming tasks.

    • 14:43
  • In this video you will learn based on the data type of a variable, the operating system allocates memory and decides what can be stored in the reserved memory. Therefore, by assigning different data types to variables, you can store integers, decimals, or characters in these variables.

    • 27:17
  • In this video you will learn about the control statement in java is a statement that determines whether the other statements will be executed or not. It controls the flow of a program. An 'if' statement in java determines the sequence of execution between a set of two statements.

    • 21:16
  • In this video you will learn Looping in programming languages is a feature which facilitates the execution of a set of instructions/functions repeatedly while some condition evaluates to true. while loop: A while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition.

    • 28:22
  • In this video you learn about Classes and Objects are basic concepts of Object Oriented Programming which revolve around the real life entities. A class is a user defined blueprint or prototype from which objects are created. It represents the set of properties or methods that are common to all objects of one type.

    • 14:24
  • In this you will learn In Java, static keyword is mainly used for memory management. It can be used with variables, methods, blocks and nested classes. It is a keyword which is used to share the same variable or method of a given class. Basically, static is used for a constant variable or a method that is same for every instance of a class.

    • 29:37
  • In this video you will learn about Array an array is a group of like-typed variables that are referred to by a common name. Arrays in Java work differently than they do in C/C++. Following are some important points about Java arrays.

    • 28:13
  • In this video you will learn the java.util.Arrays.binarySearch(Object[] a, Object key) method searches the specified array for the specified object using the binary search algorithm. The array be sorted into ascending order according to the natural ordering of its elements prior to making this call. If it is not sorted, the results are undefined.

    • 32:51
  • In this video, you will learn about the Java multidimensional array using 2-dimensional arrays and 3-dimensional arrays with the help of examples.

    • 22:37
  • In this video you will learn the java.util.Arrays.sort(Object[] a, int fromIndex, int toIndex) method sorts the specified range of the specified array of objects into ascending order, according to the natural ordering of its elements. The range to be sorted extends from index fromIndex, inclusive, to index toIndex, exclusive.

    • 14:35
  • In this video you will learn Inheritance in Java is a mechanism in which one object acquires all the properties and behaviors of a parent object. It is an important part of OOPs (Object Oriented programming system).

    • 26:27
  • In this video you will learn more about Inheritance.

    • 23:04
  • In this video you will learn In Java, two or more methods can have same name if they differ in parameters (different number of parameters, different types of parameters, or both). These methods are called overloaded methods and this feature is called method overloading.

    • 30:35
  • In the last video, you will learn about inheritance. Inheritance is an OOP property that allows us to derive a new class (subclass) from an existing class (superclass). The subclass inherits the attributes and methods of the superclass.

    • 32:42
  • In this video you will learn about t he super keyword in java is a reference variable that is used to refer parent class objects. ... Basically this form of super is used to initialize superclass variables when there is no constructor present in superclass. On the other hand, it is generally used to access the specific variable of a superclass.

    • 31:17
  • In this video you will learn about the Java programming language, the final keyword is used in several contexts to define an entity that can only be assigned once. Once a final variable has been assigned, it always contains the same value.

    • 25:25
  • In this video you will learn about Polymorphism, it is the ability of an object to take on many forms. The most common use of polymorphism in OOP occurs when a parent class reference is used to refer to a child class object. Any Java object that can pass more than one IS-A test is considered to be polymorphic.

    • 39:06
  • In this video you will learn about the class which is declared with the abstract keyword is known as an abstract class in Java. It can have abstract and non-abstract methods (method with the body).

    • 20:50
  • In this video you will learn about methods form the object's interface with the outside world; the buttons on the front of your television set, for example, are the interface between you and the electrical wiring on the other side of its plastic casing. You press the "power" button to turn the television on and off.

    • 19:20
  • In this video you will learn the interface is a reference type in Java. It is similar to class. It is a collection of abstract methods. A class implements an interface, thereby inheriting the abstract methods of the interface.

    • 15:29
  • In this video you will learn about the interface in Java is a mechanism to achieve abstraction. There can be only abstract methods in the Java interface, not method body. It is used to achieve abstraction and multiple inheritance in Java.

    • 18:14
  • In this video you will learn about the main difference is methods of a Java interface are implicitly abstract and cannot have implementations. A Java abstract class can have instance methods that implements a default behavior. ... A Java class can implement multiple interfaces but it can extend only one abstract class.

    • 11:34
  • In this video you will learn about the packages in Java is used to group related classes. Think of it as a folder in a file directory. We use packages to avoid name conflicts, and to write a better maintainable code. Built-in Packages (packages from the Java API) User-defined Packages (create your own packages)

    • 23:36
  • In this video you will learn about the access modifier, there are four types of Java access modifiers: Private: The access level of a private modifier is only within the class. Default: The access level of a default modifier is only within the package. Protected: The access level of a protected modifier is within the package and outside the package through child class.

    • 17:23
  • In this video you will learn about the Encapsulation in Java is a mechanism of wrapping the data (variables) and code acting on the data (methods) together as a single unit. In encapsulation, the variables of a class will be hidden from other classes, and can be accessed only through the methods of their current class.

    • 15:49
  • In this video you will learn about the Strings in Java are Objects that are backed internally by a char array. Since arrays are immutable (cannot grow), Strings are immutable as well. Whenever a change to a String is made, an entirely new String is created. Below is the basic syntax for declaring a string in Java programming language.

    • 27:21
  • In this video you will learn about Java String, how to create it and its various methods with the help of examples. In Java, a string is a sequence of characters. For example, "hello" is a string containing a sequence of characters 'h', 'e', 'l', 'l', and 'o'.

    • 35:22
  • In this video you will learn about the Exception (or exceptional event) is a problem that arises during the execution of a program. When an Exception occurs the normal flow of the program is disrupted and the program/Application terminates abnormally, which is not recommended, therefore, these exceptions are to be handled.

    • 14:35
  • In this video you will learn about the Customized Exception Handling: Java exception handling is managed via five keywords: try, catch, throw, throws, and finally. Briefly, here is how they work. Program statements that you think can raise exceptions are contained within a try block. If an exception occurs within the try block, it is thrown.

    • 28:28
  • In this video you will learn about the Finally block contains all the crucial statements that must be executed whether exception occurs or not. ... The statements present in this block will always execute regardless of whether exception occurs in try block or not such as closing a connection, stream etc.

    • 28:33
  • In this video you will learn about the Java exception this fall into two main categories: checked exceptions and unchecked exceptions. In this article, we'll provide some code samples on how to use them.

    • 17:08
  • In this video you will learn about the Throw is a keyword which is used to throw an exception explicitly in the program inside a function or inside a block of code. Throws is a keyword used in the method signature used to declare an exception which might get thrown by the function while executing the code

    • 34:03
  • In this video you will learn how to create a custom exception in Java. We’ll show how user-defined exceptions are implemented and used for both checked and unchecked exceptions.

    • 10:50
  • In this video you will learn about the Threads which allows a program to operate more efficiently by doing multiple things at the same time. Threads can be used to perform complicated tasks in the background without interrupting the main program.

    • 34:41
  • In this video you will learn about the Thread class provides the join, method which allows one thread to wait until another thread completes its execution. If t is a Thread object whose thread is currently executing, then t. join, will make sure that t is terminated before the next instruction is executed by the program.

    • 35:28
  • In this video you will learn about the Synchronization in java is the capability to control the access of multiple threads to any shared resource. Java Synchronization is better option where we want to allow only one thread to access the shared resource.

    • 26:47
  • In this video you will learn about the Inter Thread Communication, if you are aware of inter-process communication then it will be easy for you to understand interthread communication. Interthread communication is important when you develop an application where two or more threads exchange some information.

    • 22:07
  • In this video you will learn about the Linked List, it is a part of the Collection framework present in java. util package. This class is an implementation of the Linked List data structure which is a linear data structure where the elements are not stored in contiguous locations and every element is a separate object with a data part and address part.

    • 36:22
  • In this video you will learn about the Linked List, it is a part of the Collection framework present in java. util package. This class is an implementation of the LinkedList data structure which is a linear data structure where the elements are not stored in contiguous locations and every element is a separate object with a data part and address part.

    • 27:38
  • In this video you will learn about the Java Hash Set it class is used to create a collection that uses a hash table for storage. It inherits the Abstract Set class and implements Set interface. The important points about Java HashSet class are: HashSet stores the elements by using a mechanism called hashing. HashSet contains unique elements only.

    • 28:58
  • In this video you will learn about the Comparable and comparator, these both are an interface that can be used to sort the elements of the collection. Comparator interface belongs to java.util package while comparable belongs to java. Lang package. Comparator interface sort collection using two objects provided to it, whereas comparable interface compares" this" refers to the one objects provided to it.

    • 36:54
  • In this video you will learn about the queue its interface is provided in java. util package and it implements the Collection interface. The queue implements FIFO i.e. First in First Out. This means that the elements entered first are the ones that are deleted first.

    • 12:28
  • In this video you will learn about the Map its interface present in java util package represents a mapping between a key and a value. The Map interface is not a subtype of the Collection interface. Therefore, it behaves a bit differently from the rest of the collection types. A map contains unique keys.

    • 30:03
  • In this video you will learn about the Map its implementations are grouped into general-purpose, special-purpose, and concurrent implementations.

    • 16:55
  • In this video you will learn about JDBC it stands for Java Database Connectivity. JDBC is a Java API to connect and execute the query with the database. It is a part of JavaSE (Java Standard Edition). JDBC API uses JDBC drivers to connect with the database. There are four types of JDBC drivers.

    • 17:48
  • In this video you will learn about the JDBC API is a Java API that can access any kind of tabular data, especially data stored in a Relational Database. JDBC works with Java on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX.

    • 31:19
  • In this video you will learn how to create a simple JDBC application. This will show you how to open a database connection, execute a SQL query, and display the results.

    • 15:28
  • In this video you will learn how to use a Java JDBC Prepared Statement instead of a Statement and benefit from the features of the Prepared Statement. The Java JDBC Prepared Statement primary features are: Easy to insert parameters into the SQL statement

    • 21:47
  • In this video you will learn about Callable Statement Database in this Once a connection is obtained, we can interact with the database. The JDBC Statement, Callable Statement, and Prepared Statement interfaces define the methods and properties that enable you to send SQL or PL/SQL commands and receive data from your database

    • 22:37
  • In this video you will learn about the dynamic database refers to the process of firing SQL queries on demand to create the schema afresh. The JDBC API library is quite capable of dealing with the situation.

    • 23:17
  • In this video you will learn about the Lambda expressions are introduced in Java 8 and are touted to be the biggest feature of Java 8. Lambda expression facilitates functional programming, and simplifies the development a lot.

    • 35:08
  • In this video you will learn about the Predicate it is a generic functional interface that represents a single argument function that returns a Boolean value (true or false). This interface available in java unit function package and contains a test method that evaluates the predicate of a given argument.

    • 22:41
  • In this video you will learn about the article Lambda Expression with Collections are discussed with examples of sorting different collections like Array List, Tree Set, Tree Map, etc.

    • 21:19
  • In this video you will learn about the Consumer it is an in-built functional interface introduced in Java 8 in the java. util. function package. Consumer can be used in all contexts where an object needs to be consumed that is taken as input, and some operation is to be performed on the object without returning any result.

    • 19:12
  • In this video you will learn about the Stream, it is a new abstract layer introduced in Java 8. Using stream, you can process data in a declarative way similar to SQL statements. For example, consider the following SQL statement.

    • 10:41
  • In this video, you will learn the major pieces of new functionality Java 8 had added – Streams. We'll explain what streams are about and showcase the creation and basic stream operations with simple examples

    • 28:19

Course/Topic 2 - JSP (JavaServer Pages) - all lectures

  • In this first video on JSP, you will get a brief overview of some terminologies like World Wide Web, Web Application, What is Dynamic Web Page, HTTP, HTTP Requests, Get vs. Post, Servlet Container, Limitations of CGI. and the features of Servlets.

    • 22:20
  • In this tutorial, you will learn about Java Server Pages.

    • 20:21
  • In this video, you will learn about the Directory Structure in JSP, a complete overview of what is directory structure, how to use it and a practical demonstration of its implementation on the Eclipse window.

    • 18:13
  • This video is all about the in-depth concept on the lifecycle of a JSP page. Here the instructor will be seen explaining each and every details associated with the JSP lifecycle.

    • 13:18
  • In this first part of the Scripting Elements, you will get a detailed explanation about Scripting elements used in JSP. In short, you will learn about JSP tags. Here the tutor will be seen giving an overview about 3 different tags used in JSP which are scriplet tag, expressive tag and the declaration tag.This video will primary focus on the introduction to scriplet. Finally, the instructor will be seen demonstrating a small program writing scriplet inside a java program

    • 07:42
  • This is a continuation video to the scriplet tag and the program that was seen by the instructor writing scriplet inside a java program. Further, it will be followed with an overview on declaration tag and the syntax that is being used in this tag.

    • 30:46
  • In this video, the instructor will be seen modifying the previous program to count the number of pages that has been accessed. Here, the instructor will be showing how to write the code for the above work process in eclipse window.

    • 06:21
  • In this video, you will understand a very important concept of JSP which is the Implicit Object. You will get a complete theoretical overview of the Implicit Object and its type along with a practical demonstration on its implementation.

    • 26:42
  • This is the first part of the Implicit project where the instructor will be seen demonstrating a small project on it, which will help students in clearing all their doubts regarding Implicit Objects in JSP.

    • 27:41
  • This is the second part of the previous video where the instructor will be seen continuing with the program for demonstrating the project on Implicit Object.

    • 16:48
  • This video is a complete demonstration program on Implicit Project focusing on Login JSP. Here the tutor will be seeing explaining the process with a complete step by step process.

    • 29:41
  • In this course, you will learn about the Implicit Project Registration and the complete step by steps in implementing the steps. Here you will learn to design registration.jsp along with understanding the other concepts.

    • 21:14
  • In this video, you will learn to design success, failure and user exists.jsp. Here the instructor will be seen explaining each and every details on the above three concepts.

    • 17:03
  • Here, in this video, you will get to see the execution of the program done in the previous videos and find out the output of the project. This video consists of only the execution of the program and not the coding, which was done in the previous videos.

    • 06:16
  • In this chapter, we will discuss Directives in JSP. These directives provide directions and instructions to the container, telling it how to handle certain aspects of the JSP processing.

    • 24:25
  • The JSP directives are messages that tells the web container how to translate a JSP page into the corresponding servlet.

    • 29:33
  • This include directive is used to include the contents of any resource it may be JSP, file, html file or text file. They include directive includes the original content of the included resource at page translation time (the JSP, page is translated only once so it will be better to include static resource)

    • 24:42
  • They include directive is used to include a file during the translation phase. This directive tells the container to merge the content of other external files with the current JSP during the translation phase. You may code include directives anywhere in your JSP page.

    • 07:32
  • The jsp:useBean action tag is used to locate or instantiate a bean class. If bean object of the Bean class is already created, it doesn't create the bean depending on the scope. But if object of bean is not created, it instantiates the bean.

    • 26:21
  • In this video we will see how to use a bean class in JSP with the help of jsp:useBean, jsp:setProperty and jsp:getProperty action tags.

    • 22:57
  • In this video we will see how to use a bean class in JSP with the help of jsp:useBean, jsp:setProperty and jsp:getProperty action tags.

    • 05:42
  • The jsp: include action tag is used to include the content of another resource it may be jsp, html or servlet. The jsp include action tag includes the resource at request time so it is better for dynamic pages because there might be changes in future. The jsp: include tag can be used to include static as well as dynamic pages.

    • 46:56
  • Include action tag is used for including another resource to the current JSP page. The included resource can be a static page in HTML, JSP page or Servlet. We can also pass parameters and their values to the resource which we are including. Below I have shared two examples of , one which includes a page without passing any parameters and in second example we are passing few parameters to the page which is being included.

    • 10:55
  • JSP forward action tag is used for forwarding a request to another resource (It can be a JSP, static page such as html or Servlet). Request can be forwarded with or without parameter. In this tutorial we will see examples of action tag

    • 21:19
  • The forward action terminates the action of the current page and forwards the request to another resource such as a static page, another JSP page, or a Java Servlet.

    • 22:15
  • The Expression Language (EL) simplifies the accessibility of data stored in the Java Bean component, and other objects like request, session, application etc.

    • 21:23
  • JSP Expression Language (EL) makes it possible to easily access application data stored in JavaBeans components. JSP EL allows you to create expressions both (a) arithmetic and (b) logical. Within a JSP EL expression, you can use integers, floating point numbers, strings, the built-in constants true and false for boolean values, and null.

    • 18:49
  • Expression Language (EL) is mechanism that simplifies the accessibility of the data stored in Java bean component and other object like request, session and application, etc. There are many operators in JSP that are used in EL like arithmetic and logical operators to perform an expression. It was introduced in JSP.

    • 21:57
  • JSP is primarily used for view purpose. But even to display result of business logic, we need to access the data, process the data, store it in some scope in JSP. We have discussed how to do all these in JSP using scripting tags in earlier chapter.

    • 14:54
  • A JavaBean is a specially constructed Java class written in the Java and coded according to the JavaBeans API specifications.

    • 28:19
  • A JavaBean property is a named attribute that can be accessed by the user of the object. The attribute can be of any Java data type, including the classes that you define.

    • 29:53
  • According to Java white paper, it is a reusable software component. A bean encapsulates many objects into one object so that we can access this object from multiple places. Moreover, it provides easy maintenance.

    • 04:14
  • In this chapter, we will understand the different tags in JSP. The JavaServer Pages Standard Tag Library (JSTL) is a collection of useful JSP tags which encapsulates the core functionality common to many JSP applications.

    • 22:49
  • The JSP Standard Tag Library (JSTL) represents a set of tags to simplify the JSP development.

    • 31:54
  • The tag formats a URL into a string and stores it into a variable. This tag automatically performs URL rewriting when necessary. The var attribute specifies the variable that will contain the formatted URL.

    • 11:09
  • The tag executes an SQL SELECT statement and saves the result in a scoped variable.

    • 27:16
  • The tag is used for executing the SQL DML query defined in its sql attribute or in the tag body. It may be SQL UPDATE, INSERT or DELETE statements.

    • 17:43
  • JSTL sql tag executes the SQL 'insert', 'update' or 'delete' statements specified in its body or in its sql attribute. It executes the specified query and stores the 'number of rows affected by operation' in a scoped variable.

    • 19:34
  • The tag used as a nested action for the tag and the tag to supply a value for a value placeholder. If a null value is provided, the value is set to SQL NULL for the placeholder.

    • 24:52
  • The JSTL function provides several standard functions, most of these functions are common string manipulation functions.

    • 11:48
  • JSTL stands for JSP standard tag Library which is a collection of very useful core tags and functions. These tags and functions will help you write JSP code efficiently.

    • 32:19
  • Java Server Pages Tag Library (JSTL) is a set of tags that can be used for implementing some common operations such as looping, conditional formatting, and others. In this session, we'll be discussing how to setup JSTL and how to use its numerous tags.

    • 25:39
  • MVC stands for Model View and Controller. It is a design pattern that separates the business logic, presentation logic and data. Controller acts as an interface between View and Model. Controller intercepts all the incoming requests.

    • 41:29
  • In this last video, we'll create a small web application that implements the Model View Controller (MVC) design pattern, using basic Servlets and JSPs. We'll explore a little bit about how MVC works, and its key features before we move on to the implementation.

    • 06:15

Course/Topic 3 - Java Servlets - all lectures

  • In this video you will learn the the World Wide Web (www, W3) is an information space where documents and other web resources are identified by URIs, interlinked by hypertext links, and can be accessed via the Internet. It has become known simply as the Web.

    • 22:20
  • In this video you will learn about the Servlets are Java classes which service HTTP requests and implement the javax. servlet. Servlet interface. Web application developers typically write servlets that extend javax. servlet.http.HttpServlet, an abstract class that implements the Servlet interface and is specially designed to handle HTTP requests.

    • 28:07
  • In this video you will learn about the servlet request When a browser requests for a web page, it sends lot of information to the web server which cannot be read directly because this information travel as a part of header of HTTP request.

    • 32:17
  • In this video you will learn the Java and XML configuration are not exclusive - both can be used inside the same Spring application. In order to retrieve a bean from an XML file, one has to use the Spring container.

    • 29:02
  • In this video you will learn the web server (e.g. Apache Tomcat) starts up, the servlet container deploy and loads all the servlets. During this step Servlet container creates ServletContext object. ... For each instantiated servlet, its init() method is invoked. 3) Client (user browser) sends an Http request to web server on a certain port.

    • 05:50
  • In this video you will learn the case of Get request, only limited amount of data can be sent because data is sent in header. In case of post request, large amount of data can be sent because data is sent in body. ... Post request is secured because data is not exposed in URL bar.

    • 29:57
  • In this video you will learn the Request Dispatcher interface provides the facility of dispatching the request to another resource it may be html, servlet or jsp. This interface can also be used to include the content of another resource also. It is one of the way of servlet collaboration.

    • 35:21
  • In this video you learn the sendRedirect() method of Http Servlet Response interface can be used to redirect the response to another resource i.e. it may be a Servlet, JSP or HTML file. It works on the client side because it uses the URL bar of the browser to make another request. Hence, it can work inside and outside the server.

    • 16:58
  • In this Video you will learn the a object of ServletConfig is created by the web container for each servlet. This object can be used to get configuration information from web.xml file.

    • 27:21
  • In this second part, we’ll look a little more in depth at what makes Servlets tick. First off, we’ll examine how the HttpServletRequest object can be used to fetch information about the browser request responsible for invoking the Servlet, such as the contents of an HTML form that was submitted as part of the request.

    • 15:15
  • In this video you learn the object of ServletContext is created by the web container at time of deploying the project. This object can be used to get configuration information from web.xml file. There is only one ServletContext object per web application.

    • 17:10
  • In this video you learn to defines a set of methods that a servlet uses to communicate with its servlet container, for example, to get the MIME type of a file, dispatch requests, or write to a log file.

    • 12:13
  • In this video you will learn how If value is the same for two servlets than they will be loaded in an order on which they are declared inside web. xml file. 2. if is 0 or negative integer than Servlet will be loaded when Container feels to load them.

    • 22:57
  • In this video you will learn the HTTP is a "stateless" protocol which means each time a client retrieves a Web page, the client opens a separate connection to the Web server and the server automatically does not keep any record of previous client request.

    • 32:19
  • A cookie is a small piece of information that is persisted between the multiple client requests. A cookie has a name, a single value, and optional attributes such as a comment, path and domain qualifiers, a maximum age, and a version number.

    • 37:38
  • In this video you will learn the hidden form field is used to store session information of a client. In this method, we create a hidden form which passes the control to the servlet whose path is given in the form action area. Using this, the information of the user is stored and passed to the location where we want to send data.

    • 27:04
  • In this video you will learn the URL rewriting, we append a token or identifier to the URL of the next Servlet or the next resource. We can send parameter name/value pairs using the following format.

    • 29:59
  • In this video you will learn the Http Session object represents a user session. A user session contains information about the user across multiple HTTP requests.

    • 25:29
  • In this video you will learn about the filter is an object that is invoked at the preprocessing and postprocessing of a request. It is mainly used to perform filtering tasks such as conversion, logging, compression, encryption and decryption, input validation etc.

    • 11:52
  • In this video you will learn about the Java Servlet Filter is used to intercept the client request and do some pre-processing. It can also intercept the response and do post-processing before sending to the client in web application.

    • 55:01
  • In this video you will learn this tutorial assumes you have understanding on how JDBC application works. Before starting with database access through a servlet, make sure you have proper JDBC environment setup along with a database.

    • 30:15
  • In this video, you will learn how to build a Todo web application using JSP, Servlet, JDBC and MySQL database. You can download the source code of this tutorial from my Github repository, the link given at the end of this tutorial.

    • 34:49
  • In this video you will learn to Create a separate class to create a connection of database, as it is a lame process to writing the same code snippet in all the program. Create a .java file which returns a Connection object.

    • 04:45
  • In this video you will learn more about Database servlets.

    • 29:52
  • In this Java tutorial, we’re going to help you understand the process of coding a basic Java web application that manages a collection of books with the basic feature: list, insert, update, delete (or CURD operations - Create, Update, Read and Delete).

    • 29:57
  • In this video you learn more about Update Servlet Database - part 2

    • 21:57
  • In this video you learn about Inside the doGet() method uses the getWriter() method of ServletResponse interface with the reference of HttpServletResponse interface. Then establish a connection of database in java code and then deleted a specified row as in our example uses "delete from data where name = 'bipul' ".

    • 16:37
  • After this video Although you can start functions when your page loads, many times you'll want to start functions when a user clicks a link, enters a form, scrolls, moves his or her mouse over an object, or does something else. These actions are called events. You can set specific functions to run when the user performs an event. These functions "listen" for an event and then initiate the function.

    • 09:50
  • This tutorial will show how to register a javax.servlet.http.HttpSessionListener and track the number of active sessions in the web application using metrics.

    • 29:48
  • In this video, you are going to understand how to create a listener class which listens to an event when a session is created or destroyed in a web application. For this, we are going to create a webpage which asks the user to enter his name and city in a form and click the submit button.

    • 04:15
  • In this video you will learn ServletContextListener receives the notifications about changes to the servlet context and perform some action. ServletContextListener is used to perform important task at the time when context is initialized and destroyed.

    • 27:05
Course Objectives Back to Top

•Learn about deep Learning Platforms & Libraries

•Deep Learning market, scope, opportunities

•Deep Learning Models

•Overview on Deep Learning

•Learn about Neural Networks

Course Syllabus Back to Top

Bundle Multi (3 in 1 ) – JAVA PROGRAMMING

 

JAVA Programming Basics Course Curriculum

Java Overview

·         How the Java Environment Works

·         HelloWorld Program

·         Launch Single-File Source Code

·         jShell REPL

·         Comments and Terminators

·         Identifiers

Syntax and Types

·         Java Variables

·         var declarations

·         Java Types

·         Basic Java Types

·         Reference types

·         Conditional Expressions

·         Logical operators

·         If statement

·         While Statement

·         Do Statement

·         For statement

·         Special flow of control operators

·         Switch statement

·         Numerical Operators

·         Casting

·         Strings

Classes and Objects

·         What is an Object?

·         Objects and Encapsulation

·         What is a Class?

·         Class Object Relationship

·         The Person class

·         Variable types

·         Constructors

·         Working with the class Person

Working with Methods

·         Method Definitions

·         Method Arguments & Return Types

·         Overloading Methods

·         Method Invocations

·         Defining methods

·         Constructors Versus Methods

·         toString() method

·         Adding behaviour to the class Person

·         The PersonApp program

Class Inheritance

·         Inheritance in Java

·         Implementing Inheritance

·         Rule for overriding methods

·         Rules for Polymorphic variables

·         Casting and Inheritance

·         The super variable

·         Constructors and Inheritance

Abstract Classes, Class Side Behaviour and Final

·         Abstract Classes

·         Abstract Classes in Java

·         Defining an Abstract Class

·         Extending an Abstract Class

·         Using Concrete Subclasses

·         Class Side Information

·         Class Side Data

·         Class Side Behaviour

·         Final Keyword

Java Interfaces and Enumerations

·         What is an Interface in Java?

·         Basic Interface Definitions

·         Implementing an Interface

·         Interface

·         Using an Interface in a Contract

·         Inheritance by Interfaces and Types

·         Classes and multiple Interfaces

·         Default Interface Methods

·         Static Interface Methods

·         Enumeration Support

·         Implementing Enumerated Types

Packages

·         Packages

·         Class-Package Relationship

·         Declaring Packages

·         Packaging the Person class

·         Role of the Classpath

·         JAR Files

·         Encapsulation and Packages

·         Class modifier

·         Constructor Modifier

·         Variable Modifier

·         Method Modifiers

·         Package Summary

Java 9+ Modules

·         Introduction the JPMS

·         Java Platform Module System

·         Why we need modules

·         Look at what modules are

·         How to define a module

·         How to create a single module application

·         How to link modules

Arrays

·         What is a Java Array?

·         Creating arrays of Objects

·         Accessing Array Elements

·         Main method args array

·         Short hand from

·         Ragged Arrays in Java

·         Working with Ragged Arrays

·         Implications of Inheritance for Arrays

·         Integer Array Example

Java Generics

·         Generics and Basic Types

·         Generics and Their Types

·         Adding Generics to your classes

·         A simple user defined Generic class (the Bag class)

·         Type Equality

·         Generic Collection Assignment

·         Generics and Inheritance

Collections Classes

·         Collections API

·         ArrayList

Certification Back to Top

The Java (Core Java - JSP - Java Servlets) Certification ensures you know planning, production and measurement techniques needed to stand out from the competition.

One of the most widely used programming languages, Java is used as the server-side language for most back-end development projects, including those involving big data and Android development. Java is also commonly used for desktop computing, other mobile computing, games, and numerical computing.

Java is a widely used object-oriented programming language and software platform that runs on billions of devices, including notebook computers, mobile devices, gaming consoles, medical devices and many others. The rules and syntax of Java are based on the C and C++ languages.

To obtain the certification, you're required to take classes that teach you how to program using Java and then pass a Java exam. Once you pass the test and obtain the certification, you're qualified with the skills and knowledge needed to become a Java programmer or developer.

Uplatz online training guarantees the participants to successfully go through the Java certification provided by Uplatz. Uplatz provides appropriate teaching and expertise training to equip the participants for implementing the learnt concepts in an organization.

Course Completion Certificate will be awarded by Uplatz upon successful completion of the Java online course.

      Oracle Certified Associate Java Programmer - OCAJP

      Oracle Certified Professional Java Programmer - OCPJP

      Spring Professional Certification.

      Oracle Certified Expert - Web Component Developer - SCWCD.

      Apache Spark Developer Certification - HDPCD.

Career & Jobs Back to Top

It is hence both wise and lucrative to look for a career in Java as a software developer. The strong community, enterprise support, and growing popularity among programmers show that Java is set to stay the first choice for most businesses. Hence, java career opportunities are not fading anytime soon.

A mid-career Java Developer with 4-9 years of experience earns an average salary of ₹8.2 Lakhs per year, while a Senior Java Developer with 10-20 years of experience earns an average salary of ₹14.6 Lakhs per year.

Note that salaries are generally higher at large companies rather than small ones. Your salary will also differ based on the market you work in.

The following are the job titles:

      Java Developer.

      Junior Java Developer.

      Entry Level Java Developer.

      Java Engineer.

      Full Stack Java Developer.

Interview Questions Back to Top

Servlet interview questions

1) How many objects of a servlet is created?

Only one object at the time of first request by servlet or web container.

2) What is the life-cycle of a servlet?

1.     Servlet is loaded

2.     servlet is instantiated

3.     servlet is initialized

4.     service the request

5.     servlet is destroyed

3) Who is responsible to create the object of servlet?

The web container or servlet container.

4) When servlet object is created?

At the time of first request.

5) What is difference between PrintWriter and ServletOutputStream?

PrintWriter is a character-stream class where as ServletOutputStream is a byte-stream class. The PrintWriter class can be used to write only character-based information whereas ServletOutputStream class can be used to write primitive values as well as character-based information.

6) What is difference between GenericServlet and HttpServlet?

The GenericServlet is protocol independent whereas HttpServlet is HTTP protocol specific. HttpServlet provides additional functionalities such as state management etc.

7) What is servlet collaboration?

When one servlet communicates to another servlet, it is known as servlet collaboration. There are many ways of servlet collaboration:

o   RequestDispacher interface

o   sendRedirect() method etc.

 

8) What is the purpose of Request Dispatcher Interface?

The Request Dispacher interface provides the facility of dispatching the request to another resource it may be html, servlet or jsp. This interceptor can also be used to include the content of antoher resource.

9) Can you call a jsp from the servlet?

Yes, one of the way is RequestDispatcher interface for example:

1.     RequestDispatcher rd=request.getRequestDispatcher("/login.jsp");  

2.     rd.forward(request,response);  

 

10) What is difference between ServletConfig and ServletContext?

The container creates object of ServletConfig for each servlet whereas object of ServletContext is created for each web application.

 

Java Interview Questions

1) What is Java?

Java is the high-level, object-oriented, robust, secure programming language, platform-independent, high performance, Multithreaded, and portable programming language. It was developed by James Gosling in June 1991. It can also be known as the platform as it provides its own JRE and API.

2) List the features of Java Programming language.

There are the following features in Java Programming Language.

o   Simple: Java is easy to learn. The syntax of Java is based on C++ which makes easier to write the program in it.

 

o   Object-Oriented: Java follows the object-oriented paradigm which allows us to maintain our code as the combination of different type of objects that incorporates both data and behavior.

 

o   Portable: Java supports read-once-write-anywhere approach. We can execute the Java program on every machine. Java program (.java) is converted to bytecode (.class) which can be easily run on every machine.

 

o   Platform Independent: Java is a platform independent programming language. It is different from other programming languages like C and C++ which needs a platform to be executed. Java comes with its platform on which its code is executed. Java doesn't depend upon the operating system to be executed.

 

o   Secured: Java is secured because it doesn't use explicit pointers. Java also provides the concept of ByteCode and Exception handling which makes it more secured.

 

o   Robust: Java is a strong programming language as it uses strong memory management. The concepts like Automatic garbage collection, Exception handling, etc. make it more robust.

 

o   Architecture Neutral: Java is architectural neutral as it is not dependent on the architecture. In C, the size of data types may vary according to the architecture (32 bit or 64 bit) which doesn't exist in Java.

 

o   Interpreted: Java uses the Just-in-time (JIT) interpreter along with the compiler for the program execution.

 

o   High Performance: Java is faster than other traditional interpreted programming languages because Java bytecode is "close" to native code. It is still a little bit slower than a compiled language (e.g., C++).

 

o   Multithreaded: We can write Java programs that deal with many tasks at once by defining multiple threads. The main advantage of multi-threading is that it doesn't occupy memory for each thread. It shares a common memory area. Threads are important for multi-media, Web applications, etc.

 

o   Distributed: Java is distributed because it facilitates users to create distributed applications in Java. RMI and EJB are used for creating distributed applications. This feature of Java makes us able to access files by calling the methods from any machine on the internet.

 

o   Dynamic: Java is a dynamic language. It supports dynamic loading of classes. It means classes are loaded on demand. It also supports functions from its native languages, i.e., C and C++.

 

3) What do you understand by Java virtual machine?

Java Virtual Machine is a virtual machine that enables the computer to run the Java program. JVM acts like a run-time engine which calls the main method present in the Java code. JVM is the specification which must be implemented in the computer system. The Java code is compiled by JVM to be a Bytecode which is machine independent and close to the native code.

 

4) What is the difference between JDK, JRE, and JVM?

JVM

JVM is an acronym for Java Virtual Machine; it is an abstract machine which provides the runtime environment in which Java bytecode can be executed. It is a specification which specifies the working of Java Virtual Machine. Its implementation has been provided by Oracle and other companies. Its implementation is known as JRE.

JVMs are available for many hardware and software platforms (so JVM is platform dependent). It is a runtime instance which is created when we run the Java class. There are three notions of the JVM: specification, implementation, and instance.

JRE

JRE stands for Java Runtime Environment. It is the implementation of JVM. The Java Runtime Environment is a set of software tools which are used for developing Java applications. It is used to provide the runtime environment. It is the implementation of JVM. It physically exists. It contains a set of libraries + other files that JVM uses at runtime.

JDK

JDK is an acronym for Java Development Kit. It is a software development environment which is used to develop Java applications and applets. It physically exists. It contains JRE + development tools. JDK is an implementation of any one of the below given Java Platforms released by Oracle Corporation:

o   Standard Edition Java Platform

o   Enterprise Edition Java Platform

o   Micro Edition Java Platform

5) How many types of memory areas are allocated by JVM?

Many types:

1.     Class(Method) Area: Class Area stores per-class structures such as the runtime constant pool, field, method data, and the code for methods.

2.     Heap: It is the runtime data area in which the memory is allocated to the objects

3.     Stack: Java Stack stores frames. It holds local variables and partial results, and plays a part in method invocation and return. Each thread has a private JVM stack, created at the same time as the thread. A new frame is created each time a method is invoked. A frame is destroyed when its method invocation completes.

4.     Program Counter Register: PC (program counter) register contains the address of the Java virtual machine instruction currently being executed.

5.     Native Method Stack: It contains all the native methods used in the application.

6) What is JIT compiler?

Just-In-Time(JIT) compiler: It is used to improve the performance. JIT compiles parts of the bytecode that have similar functionality at the same time, and hence reduces the amount of time needed for compilation. Here the term “compiler” refers to a translator from the instruction set of a Java virtual machine (JVM) to the instruction set of a specific CPU.

7) What is the platform?

A platform is the hardware or software environment in which a piece of software is executed. There are two types of platforms, software-based and hardware-based. Java provides the software-based platform.

8) What are the main differences between the Java platform and other platforms?

There are the following differences between the Java platform and other platforms.

o   Java is the software-based platform whereas other platforms may be the hardware platforms or software-based platforms.

o   Java is executed on the top of other hardware platforms whereas other platforms can only have the hardware components.

9) What gives Java its 'write once and run anywhere' nature?

The bytecode. Java compiler converts the Java programs into the class file (Byte Code) which is the intermediate language between source code and machine code. This bytecode is not platform specific and can be executed on any computer.

10) What is classloader?

Classloader is a subsystem of JVM which is used to load class files. Whenever we run the java program, it is loaded first by the classloader. There are three built-in classloaders in Java.

1.     Bootstrap ClassLoader: This is the first classloader which is the superclass of Extension classloader. It loads the rt.jar file which contains all class files of Java Standard Edition like java.lang package classes, java.net package classes, java.util package classes, java.io package classes, java.sql package classes, etc.

2.     Extension ClassLoader: This is the child classloader of Bootstrap and parent classloader of System classloader. It loads the jar files located inside $JAVA_HOME/jre/lib/ext directory.

3.     System/Application ClassLoader: This is the child classloader of Extension classloader. It loads the class files from the classpath. By default, the classpath is set to the current directory. You can change the classpath using "-cp" or "-classpath" switch. It is also known as Application classloader.

Course Quiz Back to Top
Start Quiz
Q1. What are the payment options?
A1. We have multiple payment options: 1) Book your course on our webiste by clicking on Buy this course button on top right of this course page 2) Pay via Invoice using any credit or debit card 3) Pay to our UK or India bank account 4) If your HR or employer is making the payment, then we can send them an invoice to pay.

Q2. Will I get certificate?
A2. Yes, you will receive course completion certificate from Uplatz confirming that you have completed this course with Uplatz. Once you complete your learning please submit this for to request for your certificate https://training.uplatz.com/certificate-request.php

Q3. How long is the course access?
A3. All our video courses comes with lifetime access. Once you purchase a video course with Uplatz you have lifetime access to the course i.e. forever. You can access your course any time via our website and/or mobile app and learn at your own convenience.

Q4. Are the videos downloadable?
A4. Video courses cannot be downloaded, but you have lifetime access to any video course you purchase on our website. You will be able to play the videos on our our website and mobile app.

Q5. Do you take exam? Do I need to pass exam? How to book exam?
A5. We do not take exam as part of the our training programs whether it is video course or live online class. These courses are professional courses and are offered to upskill and move on in the career ladder. However if there is an associated exam to the subject you are learning with us then you need to contact the relevant examination authority for booking your exam.

Q6. Can I get study material with the course?
A6. The study material might or might not be available for this course. Please note that though we strive to provide you the best materials but we cannot guarantee the exact study material that is mentioned anywhere within the lecture videos. Please submit study material request using the form https://training.uplatz.com/study-material-request.php

Q7. What is your refund policy?
A7. Please refer to our Refund policy mentioned on our website, here is the link to Uplatz refund policy https://training.uplatz.com/refund-and-cancellation-policy.php

Q8. Do you provide any discounts?
A8. We run promotions and discounts from time to time, we suggest you to register on our website so you can receive our emails related to promotions and offers.

Q9. What are overview courses?
A9. Overview courses are 1-2 hours short to help you decide if you want to go for the full course on that particular subject. Uplatz overview courses are either free or minimally charged such as GBP 1 / USD 2 / EUR 2 / INR 100

Q10. What are individual courses?
A10. Individual courses are simply our video courses available on Uplatz website and app across more than 300 technologies. Each course varies in duration from 5 hours uptop 150 hours. Check all our courses here https://training.uplatz.com/online-it-courses.php?search=individual

Q11. What are bundle courses?
A11. Bundle courses offered by Uplatz are combo of 2 or more video courses. We have Bundle up the similar technologies together in Bundles so offer you better value in pricing and give you an enhaced learning experience. Check all Bundle courses here https://training.uplatz.com/online-it-courses.php?search=bundle

Q12. What are Career Path programs?
A12. Career Path programs are our comprehensive learning package of video course. These are combined in a way by keeping in mind the career you would like to aim after doing career path program. Career path programs ranges from 100 hours to 600 hours and covers wide variety of courses for you to become an expert on those technologies. Check all Career Path Programs here https://training.uplatz.com/online-it-courses.php?career_path_courses=done

Q13. What are Learning Path programs?
A13. Learning Path programs are dedicated courses designed by SAP professionals to start and enhance their career in an SAP domain. It covers from basic to advance level of all courses across each business function. These programs are available across SAP finance, SAP Logistics, SAP HR, SAP succcessfactors, SAP Technical, SAP Sales, SAP S/4HANA and many more Check all Learning path here https://training.uplatz.com/online-it-courses.php?learning_path_courses=done

Q14. What are Premium Career tracks?
A14. Premium Career tracks are programs consisting of video courses that lead to skills required by C-suite executives such as CEO, CTO, CFO, and so on. These programs will help you gain knowledge and acumen to become a senior management executive.

Q15. How unlimited subscription works?
A15. Uplatz offers 2 types of unlimited subscription, Monthly and Yearly. Our monthly subscription give you unlimited access to our more than 300 video courses with 6000 hours of learning content. The plan renews each month. Minimum committment is for 1 year, you can cancel anytime after 1 year of enrolment. Our yearly subscription gives you unlimited access to our more than 300 video courses with 6000 hours of learning content. The plan renews every year. Minimum committment is for 1 year, you can cancel the plan anytime after 1 year. Check our monthly and yearly subscription here https://training.uplatz.com/online-it-courses.php?search=subscription

Q16. Do you provide software access with video course?
A16. Software access can be purchased seperately at an additional cost. The cost varies from course to course but is generally in between GBP 20 to GBP 40 per month.

Q17. Does your course guarantee a job?
A17. Our course is designed to provide you with a solid foundation in the subject and equip you with valuable skills. While the course is a significant step toward your career goals, its important to note that the job market can vary, and some positions might require additional certifications or experience. Remember that the job landscape is constantly evolving. We encourage you to continue learning and stay updated on industry trends even after completing the course. Many successful professionals combine formal education with ongoing self-improvement to excel in their careers. We are here to support you in your journey!

Q18. Do you provide placement services?
A18. While our course is designed to provide you with a comprehensive understanding of the subject, we currently do not offer placement services as part of the course package. Our main focus is on delivering high-quality education and equipping you with essential skills in this field. However, we understand that finding job opportunities is a crucial aspect of your career journey. We recommend exploring various avenues to enhance your job search:
a) Career Counseling: Seek guidance from career counselors who can provide personalized advice and help you tailor your job search strategy.
b) Networking: Attend industry events, workshops, and conferences to build connections with professionals in your field. Networking can often lead to job referrals and valuable insights.
c) Online Professional Network: Leverage platforms like LinkedIn, a reputable online professional network, to explore job opportunities that resonate with your skills and interests.
d) Online Job Platforms: Investigate prominent online job platforms in your region and submit applications for suitable positions considering both your prior experience and the newly acquired knowledge. e.g in UK the major job platforms are Reed, Indeed, CV library, Total Jobs, Linkedin.
While we may not offer placement services, we are here to support you in other ways. If you have any questions about the industry, job search strategies, or interview preparation, please dont hesitate to reach out. Remember that taking an active role in your job search process can lead to valuable experiences and opportunities.

Q19. How do I enrol in Uplatz video courses?
A19. To enroll, click on "Buy This Course," You will see this option at the top of the page.
a) Choose your payment method.
b) Stripe for any Credit or debit card from anywhere in the world.
c) PayPal for payments via PayPal account.
d) Choose PayUmoney if you are based in India.
e) Start learning: After payment, your course will be added to your profile in the student dashboard under "Video Courses".

Q20. How do I access my course after payment?
A20. Once you have made the payment on our website, you can access your course by clicking on the "My Courses" option in the main menu or by navigating to your profile, then the student dashboard, and finally selecting "Video Courses".

Q21. Can I get help from a tutor if I have doubts while learning from a video course?
A21. Tutor support is not available for our video course. If you believe you require assistance from a tutor, we recommend considering our live class option. Please contact our team for the most up-to-date availability. The pricing for live classes typically begins at USD 999 and may vary.



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