在java中创建线程以在后台运行 [英] Create threads in java to run in background

问题描述

我想从我的主java程序中生成一个Java线程，该线程应该单独执行而不会干扰主程序。以下是它应该如何：

I want to spawn a Java thread from my main java program and that thread should execute separately without interfering with the main program. Here is how it should be:

1. 用户发起的主程序


2. 是否有一些业务工作并且应该创建一个可以处理后台进程的新线程


3. 一旦创建了线程，主程序就不应该等到生成的线程完成。实际上它应该是无缝的..

推荐答案

一种直接的方法是手动生成线程你自己：

One straight-forward way is to manually spawn the thread yourself:

public static void main(String[] args) {

     Runnable r = new Runnable() {
         public void run() {
             runYourBackgroundTaskHere();
         }
     };

     new Thread(r).start();
     //this line will execute immediately, not waiting for your task to complete
}

或者，如果您需要生成多个线程或需要重复执行，您可以使用更高级别的并发API和执行程序服务：

Alternatively, if you need to spawn more than one thread or need to do it repeatedly, you can use the higher level concurrent API and an executor service:

public static void main(String[] args) {

     Runnable r = new Runnable() {
         public void run() {
             runYourBackgroundTaskHere();
         }
     };

     ExecutorService executor = Executors.newCachedThreadPool();
     executor.submit(r);
     //this line will execute immediately, not waiting for your task to complete
}

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