多线程顺序打印ABC
不断唤醒机制，借用重入锁和条件队列
package com.hnist.lzn.Java8;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/*
多线程顺序打印ABC */
//
public class PrintABC {int count = 0;
Lock lock = new ReentrantLock();
Condition conditionA = this.lock.newCondition();
Condition conditionB = this.lock.newCondition();
Condition conditionC = this.lock.newCondition();
public class PrintA implementsRunnable{@Override
public void run() {
while(true){System.out.println("--A---"+count);
lock.lock();
System.out.println("A");
try {
conditionB.signal();
conditionA.await();
} catch (InterruptedException e) {
e.printStackTrace();
}finally {
lock.unlock();
}}}
}public class PrintB implementsRunnable{@Override
public void run() {
while(true){System.out.println("--B---"+count);
lock.lock();
System.out.println("B");
try {
conditionC.signal();
conditionB.await();
} catch (InterruptedException e) {
e.printStackTrace();
}finally {
lock.unlock();
}}
}
}public class PrintC implementsRunnable{@Override
public void run() {
while(true){
//if(count<10){
System.out.println("--C---"+count);
lock.lock();
System.out.println("C");
try {
conditionA.signal();
conditionC.await();
} catch (InterruptedException e) {
e.printStackTrace();
}finally {
lock.unlock();
}}
}
}public static void main(String[] args) {PrintABC printABC=new PrintABC();
new Thread(printABC.new PrintA()).start();
new Thread(printABC.new PrintB()).start();
new Thread(printABC.new PrintC()).start();
}}
结论：1.重入锁配合条件队列，每个条件队列的条件不一样。同时，每个条件都被锁住了。
【多线程顺序打印ABC】
