In java determine if a process created using Runtime environment has finished execution?

Question

Runtime.getRuntime.exex(\"abc.exe -parameters\");

using .waitFor() does not help to determine the completion of process.

Answer 1

Looks like JDK8 introduces Process.isAlive(). Surprised it took so long...

In the meantime, the best option seems to be to poll Process.exitValue(), wrapped in a try-catch:

// somewhere previous...
String[] cmd = { "abc.exe", "-p1", "-p2" };
Process process = Runtime.getRuntime.exec(cmd);

// call this method repeatedly until it returns true
private boolean processIsTerminated () {
    try {
        process.exitValue();
    } catch (IllegalThreadStateException itse) {
        return false;
    }
    return true;
}

Alternately, a similar method could return the exit value if the process had terminated, or some other specified value if not.