Thread: How to execute an executable JAR from within Java program?

Don't know if this would belong in I/O, sorry if it doesn't.

I have a game launcher program and I need it to launch my game after patching when I click on a button. I want to be able to execute this game (which is java based) within the program instead of using .bat files because I want a solution that works cross platform instead of having operating system specific commands.

If there is no such method could you please list a method for Windows, Mac, and Linux so that I can use if statements and System.getProperty("os.name") to launch the jar that way?

Thanks in Advance,
Hawke

Thanks this worked for me:

     ProcessBuilder pb = new ProcessBuilder("java", "-jar", jarname);
     pb.directory(new File(jarname).getParentFile());
 
     try{
 
	pb.start();
 
     }catch(IOException ex){
 
	ex.printStackTrace();
     }