HOW JAVA WORKS

To develop and distribute a Java program

1. Programmer codes Java source statements

2. Java compiler converts source statements into bytecode (platform-independent object language)

3. Bytecode is copied to the target platform

 To execute a Java program

1. Platform-dependent Java Virtual Machine (JVM) software must be installed

2. A copy of the JVM is started

3. Each bytecode statement is interpreted (translated) by the JVM into platform-dependent machine language and executed under JVM control.