import java.util.PrimitiveIterator;
  
 public class Classroon implements Runnable {
     private Thread student;//学生线程
     private Thread teacher;//老师线程
     public Classroon(){
         student = new Thread( this,"小迷糊" );
         teacher = new Thread( this,"大教授" );
         student.setPriority( Thread.MIN_PRIORITY );
         student.start();
         teacher.start();
     }
     public void run(){
         Thread current=Thread.currentThread();//获取当前方法的线程
         if(current==student){//如果是学生线程
             System.out.println( current.getName()+"在听课" );
             System.out.println( current.getName()+"不听课，准备睡觉" );
             try {
                 Thread.sleep( 1000*60*60 );
             }catch (InterruptedException e){
                 System.out.println( "学生被老师叫醒了,继续听课" );
                 e.printStackTrace();
             }
         }
         if(current==teacher){//如果是老师线程，则吵醒学生
             System.out.println( "老师上课" );
             for(int i=1;i<=3;i++){
                 System.out.println( current.getName()+"大声喊，上课了，不要睡觉啊" );
                 try {
                     Thread.sleep( 2000 );
                 }catch (InterruptedException e){
                     e.printStackTrace();
                 }
             }
             student.interrupt();//中断student线程的休眠状态
         }
     }
 }
 测试类public class test107 {
     public static void main(String[] args){
         new Classroon();
     }
 }