- 实现接口Runnable具有多线程能力
- 启动线程:传入目标对象+Thread对象.start( )
- 可以避免单继承局限性,灵活方便,方便同一个对象被多个线程使用(推荐使用)
下面是一个龟兔赛跑的例子:
public class Race implements Runnable {
//胜利者
private static String winner;
@Override
public void run() {
for (int i = 0; i <= 100; i++) {
//模拟兔子休息
if (Thread.currentThread().getName().equals("兔子") && i%10==0){
try {
Thread.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
//判断比赛是否结束
boolean flag = gameOver(i);
//如果比赛结束,终止程序
if (flag) {
break;
}
System.out.println(Thread.currentThread().getName() + "-->跑了" + i + "步");
}
}
//判断是否完成比赛
private boolean gameOver(int steps){
if (winner != null){
return true;
}{
if (steps >= 100){
winner = Thread.currentThread().getName();
System.out.println("winner is"+winner);
return true;
}
}
return false;
}
public static void main(String[] args) {
Race race = new Race();
new Thread(race,"兔子").start();
new Thread(race,"乌龟").start();
}
}