←	• HOME • UP •	→
	Top/Linux/Compiling and running

3.3. Compiling and Running Programs

Compiling a Java program

Use javac to compile a Java program. Command

  javac prog.java

converts the Java program in file prog.java into another file, prog.class, that the Java interpreter can run.

Running a Java program

The Java interpreter is called java. It runs a compiled Java program. Command

  java prog

Do not write .java after the program name.

Stopping a rogue program

If your program goes into an infinite loop, you will need to stop it. Type control-C. That will usually stop it.

If for some reason control-C does not work, there are more involved ways to stop it. You might need to start another terminal. Command

  ps u

shows all processes that you are currently running. Find the one that is your program. It has a process number. If n is the process number, then command

  kill n

will usually stop it. If it doesn't, then

  kill -9 n

will always stop it.

←	• HOME • UP •	→
	Top/Linux/Compiling and running