java 多线程（daemon）

package com.example;

public class App {

public static void main(String[] args) {

DoDaemon d1 = new DoDaemon();
DoRunnable d2 = new DoRunnable("Sinny");

Thread t1 = new Thread(d1);
Thread t2 = new Thread(d2);
//设置为后台线程，
t1.setDaemon(true);

t1.start();
t2.start();//用户线程结束后，JVM自动退出，不再等待后台进程
}
}

package com.example;

public class DoDaemon implements Runnable{
@Override
public void run() {
for (int i = 0; i < 300; i++) {
try {
Thread.sleep(5);
} catch (InterruptedException e) {
e.printStackTrace();
}

System.out.println("Hello__Deamon");
}
}
}

package com.example;

public class DoRunnable implements Runnable {

private String name;

public DoRunnable(String name) {
this.name = name;
}

@Override
public void run() {
for (int i = 0; i < 3; i++) {
try {
Thread.sleep(5);
} catch (InterruptedException e) {
e.printStackTrace();
}

System.out.println("Hello__" + this.name);
}
}
}