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Order123PrintLock.java
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Order123PrintLock.java
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package me.ctf.lab.concurrent;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* @author chentiefeng
* @date 2021/1/27 10:53
*/
public class Order123PrintLock {
public static void main(String[] args) throws InterruptedException {
Lock lock = new ReentrantLock();
AtomicInteger state = new AtomicInteger(0);
new Thread(() -> {
for (int i = 0; i < 10; ) {
lock.lock();
try {
while (state.get() % 3 == 0) {
System.out.println("1");
state.incrementAndGet();
i++;
}
} finally {
lock.unlock();
}
}
}).start();
new Thread(() -> {
for (int i = 0; i < 10; ) {
lock.lock();
try {
while (state.get() % 3 == 1) {
System.out.println("2");
state.incrementAndGet();
i++;
}
} finally {
lock.unlock();
}
}
}).start();
new Thread(() -> {
for (int i = 0; i < 10; ) {
lock.lock();
try {
while (state.get() % 3 == 2) {
System.out.println("3");
state.incrementAndGet();
i++;
}
} finally {
lock.unlock();
}
}
}).start();
}
}