java中怎么交替打印两个线程

java中怎么交替打印两个线程，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

使用ReentrantLock实现两个线程交替打印

实现字母在前数字在后

package com.study.pattern; 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 Demo2 { 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 caa : ca) {     c1.signal();     System.out.print(caa);     c2.await();    }    c1.signal();   } catch (InterruptedException e) {    e.printStackTrace();   } finally {    lock.unlock();   }  });  Thread t2 = new Thread(() -> {   try {    count.await();    lock.lock();    for(char naa : na) {     c2.signal();     System.out.print(naa);     c1.await();    }    c2.signal();   } catch (InterruptedException e) {    e.printStackTrace();   } finally {    lock.unlock();   }  });  t1.start();  t2.start(); }}

最后输出结果：

使用LinkedTransferQueue实现两个线程交替打印

实现字母在前数字在后

package com.study.pattern;  import java.util.concurrent.LinkedTransferQueue; public class Demo3 { private static LinkedTransferQueue<Character> linkedC = new LinkedTransferQueue<Character>(); private static LinkedTransferQueue<Character> linkedN = new LinkedTransferQueue<Character>(); public static void main(String[] args) {  String c = "ABCDEFGHI";  char[] ca = c.toCharArray();  String n = "123456789";  char[] na = n.toCharArray();  Thread t1 = new Thread(() -> {   for(char caa : ca) {    try {     linkedC.put(caa);     char a = linkedN.take();     System.out.print(a);    } catch (InterruptedException e) {     e.printStackTrace();    }   }  });  Thread t2 = new Thread(() -> {   for(char naa : na) {    try {     char b = linkedC.take();     System.out.print(b);     linkedN.put(naa);    } catch (InterruptedException e) {     e.printStackTrace();    }   }  });  t1.start();  t2.start();  }}

输出结果：

使用synchronized实现两个线程交替打印

实现字母在前数字在后

package com.study.pattern;  import java.util.concurrent.CountDownLatch; public class Demo4 { 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();  Object lock = new Object();  Thread t1 = new Thread(() -> {   synchronized (lock) {    count.countDown();    for(char caa : ca) {     System.out.print(caa);     lock.notify();     try {      lock.wait();     } catch (InterruptedException e) {      e.printStackTrace();     }    }    lock.notify();   }  });  Thread t2 = new Thread(() -> {   try {    count.await();   } catch (InterruptedException e) {    e.printStackTrace();   }   synchronized (lock) {    for(char naa : na) {     System.out.print(naa);     lock.notify();     try {      lock.wait();     } catch (InterruptedException e) {      e.printStackTrace();     }    }    lock.notify();   }  });  t1.start();  t2.start(); }}

输出结果：

使用LockSupport实现两个线程交替打印

实现字母在前数字在后

package com.study.pattern;  import java.util.concurrent.locks.LockSupport; public class Demo5 { private static Thread t1; private static Thread t2; public static void main(String[] args) {  String c = "ABCDEFGHI";  char[] ca = c.toCharArray();  String n = "123456789";  char[] na = n.toCharArray();  t1 = new Thread(() -> {   for(char caa : ca) {    System.out.print(caa);    LockSupport.unpark(t2);    LockSupport.park();    }  });  t2 = new Thread(() -> {   for(char naa : na) {    LockSupport.park();    System.out.print(naa);    LockSupport.unpark(t1);   }  });  t1.start();  t2.start(); }}

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