Java - Using Java on Unix (Including 1.5)

• Compiling Java on Unix

Compiling Java on Unix

1. Open a Unix Session
2. Go to the folder where you code is.
3. Type javac filename.java
4. Type java filename (without the extension) to run the compiled code
   
   
   Fig 01
   
   

CLASSPATH

If you are compiling against a file contained in another directory (or in a .jar in another directory), you can set the classpath to the location of the file and compile from where you are.
The simplest way to set the classpath is to set the CLASSPATH environment variable. For example:
setenv CLASSPATH .:/user/bseay/allmyfiles
You can also do it when calling javac:
javac -classpath .:/user/bseay/allmyfiles superhardprogram.java
This is also true for running a file.

Troubleshooting

• If the java file is inside a project, it must be inside a folder with that project name.
• If you get a command not found error for either javac or java, your .login is not set up correctly. Instructions for fixing this are located here: Fixing Lost Unix Commands.