java 两个线程打印出1a2b3c

﹏ヽ暗。殇╰゛Y 2022-10-28 04:56 114阅读 0赞

public class testThread {
    
    
       private static final Object lock=new Object();
    
       private static final char[] nub="123456789".toCharArray();
    
       private static final char[] abc="abcdefghi".toCharArray();
    
    
        public static void main(String[] args){
    
          new Thread(()->{
              synchronized(lock){
              for(char n:nub){
                  System.out.println(n);
                  try {
                      lock.notify();//先唤醒另一个线程
                      lock.wait();//让出锁
                  } catch (InterruptedException e) {
                      e.printStackTrace();
                  }
              }
                  lock.notify();
              }
          }).start();
    
    
         new Thread(()->{
             synchronized (lock){
                 for(char a:abc){
                     System.out.println(a);
                     try {
                         lock.notify();
                         lock.wait();
                     }catch (InterruptedException e){
                         e.printStackTrace();
                     }
                 }
                 lock.notify();
    
             }
         }).start();
    
    
    
    
        }
    
    }

上述方法利用wait、notify的方法

public static void main(String[] args){
    
             t1= new Thread(()->{
              for(char n:nub){
                  System.out.println(n);
                  LockSupport.unpark(t2);//唤醒t2
                  LockSupport.park();//挂起当前线程
              }
          });
             t2=new Thread(()->{
             for(char a:abc){
                 LockSupport.unpark(t1);//唤醒t1
                 System.out.println(a);
                 LockSupport.park();//挂起当前线程
             }
         });
             t1.start();
             t2.start();
    
        }

利用LockSupport