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1 Java Tutorial
2 Java Training
3 Our core Java programming tutorial is designed for students and working professionals. Java is an object-oriented, class-based, concurrent, secured and general-purpose computer-programming language. It is a widely used robust technology.
5 What is Java
6 Java is a programming language and a platform.
8 Java is a high level, robust, object-oriented and secure programming language.
11 Platform: Any hardware or software environment in which a program runs, is known as a platform. Since Java has a runtime environment (JRE) and API, it is called a platform.
13 Java Example
14 Let's have a quick look at Java programming example. A detailed description of hello Java example is available in next page.
16 class Simple{
17 public static void main(String args[]){
18 System.out.println("Hello Java");
19 }
20 }
21 Test it Now
24 Application
25 According to Sun, 3 billion devices run Java. There are many devices where Java is currently used. Some of them are as follows:
27 Desktop Applications such as acrobat reader, media player, antivirus, etc.
28 Web Applications such as,, etc.
29 Enterprise Applications such as banking applications.
30 Mobile
31 Embedded System
32 Smart Card
33 Robotics
34 Games, etc.
35 Types of Java Applications
36 There are mainly 4 types of applications that can be created using Java programming:
38 1) Standalone Application
39 Standalone applications are also known as desktop applications or window-based applications. These are traditional software that we need to install on every machine. Examples of standalone application are Media player, antivirus, etc. AWT and Swing are used in Java for creating standalone applications.
41 2) Web Application
42 An application that runs on the server side and creates a dynamic page is called a web application. Currently, Servlet, JSP, Struts, Spring, Hibernate, JSF, etc. technologies are used for creating web applications in Java.
44 3) Enterprise Application
45 An application that is distributed in nature, such as banking applications, etc. is called enterprise application. It has advantages of the high-level security, load balancing, and clustering. In Java, EJB is used for creating enterprise applications.
47 4) Mobile Application
48 An application which is created for mobile devices is called a mobile application. Currently, Android and Java ME are used for creating mobile applications.
50 Java Platforms / Editions
51 There are 4 platforms or editions of Java:
53 1) Java SE (Java Standard Edition)
54 It is a Java programming platform. It includes Java programming APIs such as java.lang,,, java.util, java.sql, java.math etc. It includes core topics like OOPs, String, Regex, Exception, Inner classes, Multithreading, I/O Stream, Networking, AWT, Swing, Reflection, Collection, etc.
56 2) Java EE (Java Enterprise Edition)
57 It is an enterprise platform which is mainly used to develop web and enterprise applications. It is built on the top of the Java SE platform. It includes topics like Servlet, JSP, Web Services, EJB, JPA, etc.
59 3) Java ME (Java Micro Edition)
60 It is a micro platform which is mainly used to develop mobile applications.
62 4) JavaFX
63 It is used to develop rich internet applications. It uses a light-weight user interface API.
65 Prerequisite
66 To learn Java, you must have the basic knowledge of C/C++ programming language.
68 Audience
69 Our Java programming tutorial is designed to help beginners and professionals.
71 Problem
72 We assure that you will not find any problem in this Java tutorial. However, if there is any mistake, please post the problem in the contact form.
76 Do You Know?
77 What is the difference between JRE and JVM?
78 What is the purpose of JIT compiler?
79 Can we save the java source file without any name?
80 Why java uses the concept of Unicode system?
81 What will we learn in Basics of Java?
82 History of Java
83 Features of Java
84 Hello Java Program
85 Program Internal
86 How to set path?
87 Difference between JDK,JRE and JVM
88 Internal Details of JVM

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