创建A,B两个线程交替打印1-100，A线程打印单数，B线程打印双数
package com.advance.code.learn.day0226;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.ReentrantLock;
/**
* 两个线程交替打印 1-100的数
*/
public class TurnedPrintThread {
public static void main(String[] args) {
PrinterHandler printerHandler = new PrinterHandler();
new Thread(() -> {
for (int i = 1; i <= 100; i += 2) {
printerHandler.printer(i, true);
}
}, "AAAAAA").start();
new Thread(() -> {
for (int i = 2; i <= 100; i += 2) {
printerHandler.printer(i, false);
}
}, "BBBBBB").start();
}
}
class PrinterHandler{
//用于标记当前线程 true是A线程 flag是B线程
private boolean flag = true;
private ReentrantLock lock = new ReentrantLock();
Condition condition1 = lock.newCondition();
Condition condition2 = lock.newCondition();
public void printer(int num, boolean flagThread){
lock.lock();
try {
while (flagThread != flag){
if(flagThread){
condition1.await();
}else{
condition2.await();
}
}
System.out.println(Thread.currentThread().getName() + "打印： "+num);
if(flagThread){
flag = false;
condition2.signal();
}else{
flag = true;
condition1.signal();
}
}catch (Exception e){
e.printStackTrace();
}finally {
lock.unlock();
}
}
}