Kill

gistfile1.java

import java.io.IOException;


public class Main {
    public static void main(String[] args) throws IOException, InterruptedException {
        runAndKill("java A", 3000);
    }
    public static void runAndKill(String cmd, final long millis) throws IOException, InterruptedException {
        final Process proc = Runtime.getRuntime().exec(cmd);
        new Thread() {
            public void run() {
                try {
                    Thread.sleep(millis);
                    proc.destroy();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            };
        }.start();
    }
}