import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class B {
public Lock lock = new ReentrantLock();
public Condition condition1 = lock.newCondition();
public Condition condition2 = lock.newCondition();
public Condition condition3 = lock.newCondition();
public volatile int state1 = 0;
public static void main(String[] args) {
new B().printABC();
}public void printABC() {
new Thread(new Runnable() {
@Override
public void run() {
for (int i=0;
i<10;
i++) {
try {
lock.lock();
while (state1 != 0) {
condition1.await();
}
System.out.println("1--A");
state1=1;
condition2.signal();
} catch (Exception e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}
}
}).start();
new Thread(new Runnable() {
@Override
public void run() {
for (int i=0;
i<10;
i++) {
try {
lock.lock();
while(state1 != 1) {
condition2.await();
}
System.out.println("2--B");
state1 = 2;
condition3.signal();
} catch (Exception e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}
}}).start();
new Thread(new Runnable() {
@Override
public void run() {
for (int i=0;
i<10;
i++) {
try {
lock.lock();
while(state1 != 2) {
condition3.await();
}
System.out.println("3--C");
state1 = 0;
condition1.signal();
} catch (Exception e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}
}}).start();
}
}
打印结果：
【Condition ReentrantLock实现循环10次打印ABC方式2】1--A
2--B
3--C
1--A
2--B
3--C
1--A
2--B
3--C
1--A
2--B
3--C
1--A
2--B
3--C
1--A
2--B
3--C
1--A
2--B
3--C
1--A
2--B
3--C
1--A
2--B
3--C
1--A
2--B
3--C
