考察join
/**
* 现有T1、T2、T3三个线程，你怎样保证T2在T1执行完成之后执行，T3在T2执行完后执行？
* @author user
*
*/
public class Test3 {
public static void main(String[] args) throws InterruptedException {
Thread T1 = new Thread(new T1());
Thread T2 = new Thread(new T2());
Thread T3 = new Thread(new T3());
T1.start();
T1.join();
T2.start();
T2.join();
T3.start();
T3.join();
}
}
class T1 implements Runnable{
@Override
public void run() {
System.out.println(Thread.currentThread()+"T1");
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
class T2 implements Runnable{
@Override
public void run() {
System.out.println(Thread.currentThread()+"T2");
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
class T3 implements Runnable{
@Override
public void run() {
System.out.println(Thread.currentThread()+"T3");
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
