Hi Friend,

Java Virtual Machine is responsible for running java program.Java uses the "javac" command to compile the program and after compiling,uses "java" command to execute or run the program. For ex, If you have the following java program:

class HelloWorld{
public static void main(String[] args) {
System.out.println("Welcome to RoseIndia.net");
}
}

Then firstly compile the java file on the command prompt using: "javac HelloWorld.java". And then run it using: "java HelloWorld"

Thanks