在java多線程中，沒有主次線程的區別，只要有線程還在運行，進程就不會結束

import java.util.Arrays; import java.util.HashSet; import java.util.Iterator; import java.util.Set;public class Testa {static class Task implements Runnable {public void run() {try {for (int i = 0; i < 10; ++i) {Thread.sleep(500);System.out.println(Thread.currentThread().getName() + " is running");}} catch (InterruptedException e) {e.printStackTrace();}}}public static void main(String[] args) {// TODO Auto-generated method stubThread t1 = new Thread(new Task(), "task1");Thread t2 = new Thread(new Task(), "task2");t1.start();t2.start();System.out.println("main is over "+Thread.currentThread().getName());}}

output:

main is over main
task2 is running
task1 is running
task2 is running
task1 is running
task2 is running
task1 is running
task1 is running
task2 is running
task1 is running
task2 is running
task2 is running
task1 is running
task2 is running
task1 is running
task2 is running
task1 is running
task1 is running
task2 is running
task1 is running
task2 is running

總結

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