三个线程循环输出1,2,3，试用场景：并发的分工协作

浅浅的花香味﹌ 2023-06-12 09:00 4阅读 0赞

package com.company.lyh;
    
    import com.sun.corba.se.spi.copyobject.CopyobjectDefaults;
    
    import java.util.concurrent.Semaphore;
    import java.util.concurrent.locks.Condition;
    import java.util.concurrent.locks.Lock;
    import java.util.concurrent.locks.ReentrantLock;
    
    public class Main {
        private static Lock lock = new ReentrantLock();
        private static int count = 0;
          private static Semaphore A = new Semaphore(1);
          private static Semaphore B = new Semaphore(1);
          private static Semaphore C = new Semaphore(1);
        public static void main(String[] args){
    	// write your code here
            final Main demo2 = new Main();
            Thread t1 = new Thread(demo2::print1);
            Thread  t2 = new Thread(demo2::print2);
            Thread t3 = new Thread(demo2::print3);
            try {
                B.acquire();
                C.acquire();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            t1.start();
            t2.start();
            t3.start();
        }
    
        public void print1()  {
            for (int i = 0; i <= 100; i += 3) {
                try {
                    A.acquire();
                    if((i+3)%3==0)
                    {
    
                        System.out.println("print1:"+i);
                    }
                    B.release();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
    
    
            }
        }
        public  void print2()  {
            for (int i = 1; i <= 100; i += 3) {
    
                try {
                    B.acquire();
                    if((i+3)%3==1)
                    {
                        System.out.println("print2:"+i);
                    }
                    C.release();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
    
    
            }
        }
        public void print3()  {
            for (int i = 2; i <= 100; i += 3) {
    
                try {
                    C.acquire();
                    if((i+3)%3==2)
                    {
                        System.out.println("print3:"+i);
    
                    }
                    A.release();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
    
            }
        }
    }

输出结果如下：

print1:0
    print2:1
    print3:2
    print1:3
    print2:4
    print3:5
    print1:6
    print2:7
    print3:8
    print1:9
    print2:10
    print3:11
    print1:12
    print2:13
    print3:14
    print1:15
    print2:16
    print3:17
    print1:18
    print2:19
    print3:20
    print1:21
    print2:22
    print3:23
    print1:24
    print2:25
    print3:26
    print1:27
    print2:28
    print3:29
    print1:30
    print2:31
    print3:32
    print1:33
    print2:34
    print3:35
    print1:36
    print2:37
    print3:38
    print1:39
    print2:40
    print3:41
    print1:42
    print2:43
    print3:44
    print1:45
    print2:46
    print3:47
    print1:48
    print2:49
    print3:50
    print1:51
    print2:52
    print3:53
    print1:54
    print2:55
    print3:56