if(isProcessRunning("Taskmgr.exe")){
    // TODO code application logic here
        killProcess("Taskmgr.exe");
    }

public static boolean isProcessRunning(String servicename) throws Exception {

 Process p = Runtime.getRuntime().exec(TASKLIST);
 BufferedReader reader = new BufferedReader(new InputStreamReader(
   p.getInputStream()));
 String line;
 while ((line = reader.readLine()) != null) {
    System.out.println(line);
    if (line.contains(servicename)) {
        System.err.println(line);
        return true;
    }
 }

 return false;

}

public static void killProcess(String serviceName) throws Exception {

  Runtime.getRuntime().exec(KILL + serviceName);

 }