什么是java守护线程

本篇内容主要讲解"什么是java守护线程"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"什么是java守护线程"吧!

1、当其他非守护线程完成时，守护线程将自行结束。

2、任何线程都可以成为守护线程。通过调用Thread.setdaemon()来声明一个线程是一个守护线程。线程的共性是只有在非守护线程还在工作时才有意义。

实例

/** * Creates ten threads to search for the maximum value of a large matrix. * Each thread searches one portion of the matrix. */public class TenThreads {     private static class WorkerThread extends Thread {        int max = Integer.MIN_VALUE;        int[] ourArray;         public WorkerThread(int[] ourArray) {            this.ourArray = ourArray;        }         // Find the maximum value in our particular piece of the array        public void run() {            for (int i = 0; i < ourArray.length; i++)                max = Math.max(max, ourArray[i]);        }         public int getMax() {            return max;        }    }     public static void main(String[] args) {        WorkerThread[] threads = new WorkerThread[10];        int[][] bigMatrix = getBigHairyMatrix();        int max = Integer.MIN_VALUE;         // Give each thread a slice of the matrix to work with        for (int i=0; i < 10; i++) {            threads[i] = new WorkerThread(bigMatrix[i]);            threads[i].start();        }         // Wait for each thread to finish        try {            for (int i=0; i < 10; i++) {                threads[i].join();                max = Math.max(max, threads[i].getMax());            }        }        catch (InterruptedException e) {            // fall through        }         System.out.println("Maximum value was " + max);    }}

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