java， thread， runnable

public class Main {
  public static void main(String[] args) {
   new Thread(new BoilThread()).start();
   new Thread(new WashThread()).start();
  }
}

public class BoilThread implements Runnable{
 @Override
 public void run() {
  // TODO Auto-generated method stub
  try {
   System.out.println("开始烧水。。。");
   Thread.sleep(10000);
   System.out.println("水烧开了。。。");
  } catch (Exception e) {
   // TODO: handle exception
   e.printStackTrace();
  }
 }
}

public class WashThread implements Runnable{
 @Override
 public void run() {
  try {
   for(int i=0;i<5;i++){
   System.out.println("开始洗茶杯。。。");
   Thread.sleep(200);
   System.out.println("第"+(i+1)+"个茶杯洗干净了。。。");
   }
  } catch (Exception e) {
   // TODO: handle exception
   e.printStackTrace();
  }
 }
}