多线程练习4

使用ReentrantLock实现两个线程交替打印

package com.bonc;

import com.alibaba.druid.sql.visitor.functions.Char;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class ThreadTest {

    private  static Lock lock = new ReentrantLock();
    private static Condition c1 = lock.newCondition();
    private static Condition c2 = lock.newCondition();
    private static CountDownLatch count = new CountDownLatch(1);


    public static void main(String[] args) {

        String c = "ABCDEFGHI";
        char[] ca = c.toCharArray();
        String n = "123456789";
        char[] na = n.toCharArray();
        Thread t1 = new Thread(()->{
            try {
                lock.lock();
                count.countDown();
                for (char c3 : ca) {
                    c1.signal();
                    System.out.print(c3);
                    c2.await();
                }
                c1.signal();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }finally {
                lock.unlock();
            }
        });

        Thread t2 = new Thread(()->{
            try {
                lock.lock();
                count.countDown();
                for (char c3 : na) {
                    c2.signal();
                    System.out.println(c3);
                    c1.await();
                }
                c2.signal();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }finally {
                lock.unlock();
            }
        });

        t1.start();
        t2.start();
    }

}