public class FTPUpload extends Thread {

      public static void main (String args[]) {
        _//some code_
        final Thread thread1 = new Thread(){;
          public void run() {
    _//code of thread1_
}

final Thread thread2 = new Thread(){;
  public void run() {
   _//code of thread2_

}

thread1.start();
thread2.start();

       }
    }

final Lock lock = new ReentrantLock();
final Condition done = lock.newCondition();
...
// in thread 1 when finished
lock.lock();
try {
  done.signalAll();
} finally {
  lock.unlock();
}
...
// in thread 2 for waiting
lock.lock();
try {
  done.await(30,TimeUnit.SECONDS); // wait for the done or give up waiting after 30s
} finally {
  lock.unlock();
}

final CountDownLatch latch = new CountDownLatch(1);
...
// in thread 1
latch.countDown();
...
// in thread 2
latch.await(30,TimeUnit.SECONDS)