Waiting on an object : synchronized « Thread « Java Tutorial

1. Java Tutorial
2. Thread
3. synchronized

public class Main {
  public static void main(String str[]) {
    final Object monitor = new Object();
    new Thread() {
      public void run() {
        try {
          synchronized (monitor) {
            System.out.println("10 seconds ...");
            monitor.wait(10000);
            System.out.println("Wait over");
          }
        } catch (Throwable t) {
          t.printStackTrace();
        }
      }
    }.start(); 
  }
}