public class Thread1 {
public static void main(String[] args) {
//TestThread t = new TestThread();
TestThread2 tt = new TestThread2();
//Thread t2 = new Thread(t);
tt.start();//子类继承了父类的方法,可以直接调用
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
/*t2.start();
for (int i = 0; i < 10; i++) {
System.out.println("-----"+ i);
} */
}
//没有先后顺序,随机出来
}
class TestThread2 extends Thread{ //继承
@Override
public void run() {
/*for (int i = 0; i < 10; i++) {
System.out.println("***"+ i);
}*/
boolean flag = true;
public static void shuuatdown() {
}
while (flag) {
System.out.println(new Date());
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
//e.printStackTrace();
return;
}
}
}
}
class TestThread implements Runnable{ //给一个接口,这种方法更好一些,因为可以解决单继承的问题
@Override
public void run() { //重写
for (int i = 0; i < 10; i++) {
System.out.println("====="+ i);
}
}
}