Renu Sharma

Web Designer


Introduction of Java

Java is a simple programming language.The <script> that is define the client-side script.Because, It helps to create modular programs and reusable code. Its a high level language, robust, and secure programming language. It is easy to learn and simple to use. It is open source, free and powerful and secure. Because, works on different platform because, huge community support.It is one of the most popular language in the world.


There are many devices where java is currently used.

  • Desktop application such as media player, antivirus etc.
  • Web application such as etc.
  • Enterprise application such as banking application.
  • Mobile
  • Embedded system
  • Smart card
  • Games etc.

Learn the Main Features 

features of java

Java terminology

JVM:- (Java Virtual Machine) is an abstract machine.It is called virtual machine because it doesn’t physically exist. Because,JVM is a specification that provides runtime environment in which bytecode can be executed. JVM available hardware and software platform.

Learn main operation perform of JVM

  • Loads code
  • Verifies code
  • Executes code
  • Provide runtime environment

JRE:- JRE stands for Java Runtime Environment.The JRE consist of the JVM and the class libraries.Because,its contain the necessary functionality to start programs. JRE is implication for JVM because, it physically exist.

JDK:- The JDK additionally contains the development tools necessary to create programs. It consist of compiler,the virtual machine and class libraries. It develop the application and applets because, physically exist. JDK contain the JRE + development tools.