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    <p>There is a leaner way to do this using Java JNI. </p> <p>This works definitely for Windows and Linux, i assume that you can do the same for other platforms too. </p> <p>The biggest problem of Java process handling is the lack of a method to get the process id of the process started with untime.getRuntime().exec(). </p> <p>Assuming you got the pid of a process, you always can start a kill -9 command in linux, or use similar ways to kill a process in windows. </p> <p>Here is a way to get the process id natively for linux (borrowed from the selenium framework, :) ), and with the help of JNI this also can be done for windows (using native Windows API calls). </p> <p>For this to work (for Windows) you first have to get the JNI Library at <a href="http://java.net/projects/jna/downloads/" rel="nofollow">JAVA NATIVE ACCESS (JNA): Downloads</a></p> <p>Look at the following code, which will get the pid of a (in this example windows) program (most of the code is actually debris to get a working java program going):</p> <pre><code>import com.sun.jna.*; import java.lang.reflect.Field; import java.util.logging.Level; import java.util.logging.Logger; public class Main { static interface Kernel32 extends Library { public static Kernel32 INSTANCE = (Kernel32) Native.loadLibrary("kernel32", Kernel32.class); public int GetProcessId(Long hProcess); } public static void main(String[] args) { try { Process p; if (Platform.isWindows()) p = Runtime.getRuntime().exec("cmd /C ping msn.de"); else if (Platform.isLinux()) p = Runtime.getRuntime().exec("cmd /C ping msn.de"); System.out.println("The PID: " + getPid(p)); int x = p.waitFor(); System.out.println("Exit with exitcode: " + x); } catch (Exception ex) { Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex); } } public static int getPid(Process p) { Field f; if (Platform.isWindows()) { try { f = p.getClass().getDeclaredField("handle"); f.setAccessible(true); int pid = Kernel32.INSTANCE.GetProcessId((Long) f.get(p)); return pid; } catch (Exception ex) { Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex); } } else if (Platform.isLinux()) { try { f = p.getClass().getDeclaredField("pid"); f.setAccessible(true); int pid = (Integer) f.get(p); return pid; } catch (Exception ex) { Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex); } } else{} return 0; } } </code></pre> <p>Hope this helps, ;)...</p>
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    1. COFor windows, you can do kill -9 with another Windows API call: BOOL WINAPI TerminateProcess(HANDLE hProcess,UINT uExitCode);
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    2. COVery nice. Tested on Windows and it works. Little obvious bug: in getPid you never returns linux pid.
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