两个线程轮流打印数字,一直到100,java实现
时间: 2024-02-25 09:11:03 浏览: 31
好的,以下是一个简单的Java实现,使用两个线程轮流打印数字,一直到100:
```java
public class PrintNumber {
private static final Object lock = new Object();
private static int number = 1;
public static void main(String[] args) {
Thread t1 = new Thread(new PrintOdd());
Thread t2 = new Thread(new PrintEven());
t1.start();
t2.start();
}
static class PrintOdd implements Runnable {
public void run() {
synchronized (lock) {
while (number <= 100) {
if (number % 2 != 0) {
System.out.println(Thread.currentThread().getName() + ": " + number);
number++;
lock.notify();
} else {
try {
lock.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}
}
static class PrintEven implements Runnable {
public void run() {
synchronized (lock) {
while (number <= 100) {
if (number % 2 == 0) {
System.out.println(Thread.currentThread().getName() + ": " + number);
number++;
lock.notify();
} else {
try {
lock.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}
}
}
```
以上代码中,我们使用了一个共享变量number来记录当前需要打印的数字,使用synchronized关键字保证了两个线程的互斥访问,使用wait()和notify()方法实现了线程的轮流打印。其中,PrintOdd线程打印奇数,PrintEven线程打印偶数,直到number大于100时停止打印。