java并发

三个线程打印1到100；

public class MyRunnable implements Runnable {
private int i =0;
@Override
public void run() {
while(i<100){
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
synchronized (this){//同步操作 锁住对象
if(i<100){
System.out.println(Thread.currentThread().getName()+" "+ ++i);
}
}
}
}
}
public class ThreadQuesstion {
public static void main(String args[]){
MyRunnable run = new MyRunnable();
Thread a = new Thread(run,"a");
Thread b = new Thread(run,"b");
Thread c = new Thread(run,"c");
a.start();
b.start();
c.start();
}
}结果：