I am making a program (3D Minesweeper) and I'm having problems with detecting the result. I tried separate Thread to wait for the result, but it doesn't work(just no). So I figured the simplest way would be having 2 separate programs (not a problem), where one runs the other (with args,1.problem) and gets the value returned by it's System.exit();(2.problem). I've found some examples of solving the first problem, but not the second. Is there a proper way to do it, or do I have to write the result to a file or something? BTW feel free to correct grammar, I'm just learning XD.
If you are using System.exec () to run the programs, then look at the return value of waitFor () for the Process
Process p = Runtime.getRuntime().exec("cmd /C dir");
int rc = p.waitFor ();
System.out.println ("Exit code is " + rc);
You can also look at the exitValue () of the process, but you have to be sure the program has run to completion before this is reliable.
Process p = Runtime.getRuntime().exec("cmd /C dir");
p.waitFor (); // make sure we run to completion
System.out.println ("Exit code is " + p.exitValue ());