1. Install and Setup Java Environment on Windows, Linux

Basic step for installing and setting up environment.

1. Download Latest Version of Java From Here: JAvA WEBSITE.
2. Install the Java.
3. Setting up Environment Variables:
   
   For Windows XP
   
   • Right Click on My Computer and then select properties.
   • Click on Environment Variable under the tab "Advance".
   • Now modify the path variable.
     Example: If it contains any value leave it and at very last add the following:
     ;C:\Program Files\Java\JDK\
     where after ";" is JDK Path where you install Java.

For Windows 7 or Windows 8

• Right Click on My Computer and then select properties.
• Select Advanced System Setting under the Advanced Tab.
• Follow the same thing as described for XP.

For Linux, Unix or FreeBSD
• Run your bash or shell program.
• Write: export PATH=/path/to/java:$PATH
  
4. Almost Done.
   
5. For writing java program you can use Notepad or Notepad++.
   
6. Write your first java program in any text editor and save it with anyname with suffix(extension) ".java"
   
7. Open command prompt(in Windows) or shell/bash(in Linux).
   
8. Move to your file location by using cd.
   Example: If you save your file in C:\test\myfile.java then you write cd c:\test
   
9. Write javac YourFileName.java
   
10. If there is no syntax error in your java program then its returns nothing.
    
11. Write java YourClassName

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