import java.util.*;

public class Sample { 
  public static void main(String[] args) throws Exception {
    Thread th = new Thread(new Runnable() {
      public void run() {
        System.out.println("in another thread");
      }
    });
    
    th.start();
    System.out.println("in main");
    th.join();
    System.out.println("done");
  }
}