join()
让主进程等待子进程全部执行完
例子如下：
package mocker;
public class TestThread5 extends Thread {
private String name;
public TestThread5(String name) {
super(name);
this.name = name;
}
@Override
public void run() {
System.out.println(Thread.currentThread().getName() + "线程运行开始 ");
for (int i = 0; i < 5; i++) {
System.out.println("子线程" + name + "运行： " + i);
try {
sleep((int) Math.random() * 10);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println(Thread.currentThread().getName() + "线程运行结束");
}
public static void main(String[] args) {
System.out.println(Thread.currentThread().getName() + "主线程运行开始!");
TestThread5 mTh1 = new TestThread5("A");
TestThread5 mTh2 = new TestThread5("B");
mTh1.start();
mTh2.start();
try{
mTh1.join();
}catch(InterruptedException e){
e.printStackTrace();
}
try{
mTh2.join();
}catch(InterruptedException e){
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + "主线程运行结束!");
}
}