1. How Java Program ExecutesBy
Rajanikanth B

2. Overview of total Process
Create source code
Generally it will be with .java extension. For example Sample.java
Compile using ‘javac’ command
It generates BYTECODE with .class extension (e.i. Sample.class)
Execute using ‘java’ command
It takes .class file & interprets into machine code by JVM. That machine code will be executed on the OS.

3. List of Errors …… Machine Code java Machine Code Source Code Compiler
JVM
Machine Code
Windows OS
java
JVM
Machine Code
Source Code
Compiler
ByteCode
UNIX OS
java
javac
java
JVM
Machine Code
MAC OS
Sample.java
Sample.class
java
JVM
Machine Code
List of Errors ……
Mobile OS

4. JDK JRE JVM How it is Organized
javac, javap, jar, debugging tools, etc.,
JRE
java, javaw, Libraries, rt.jar, etc.,
JVM
J I T
Just In Time (Compiler)

5. Next…. Choosing Java Development Environment
In Slide Show mode, click the arrow to enter the PowerPoint Getting Started Center.