能停止的线程——return法（菜鸟玩线程）

朱雀 2024-02-19 12:56 50阅读 0赞

## 能停止的线程\_使用return停止线程 ##

实现代码如下：

##### `自定义线程类` #####

package com.thread8;
    
    public class MyThread extends Thread {
        
        @Override
        public void run() {
        
            super.run();
    
            while (true) {
        
                if (this.isInterrupted()) {
        
                    System.out.println("停止了！！");
                    return;
                }
                System.out.println("timer = " + System.currentTimeMillis());
            }
        }
    }

##### `启动类` #####

package com.fiberhome.thread8;
    
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.PrintStream;
    
    public class Run {
        
        public static void main(String[] args) {
        
    
            File f = new File("out.txt");
            try {
        
                f.createNewFile();
            } catch (IOException e) {
        
                e.printStackTrace();
            }
            FileOutputStream fileOutputStream = null;
            try {
        
                fileOutputStream = new FileOutputStream(f);
            } catch (FileNotFoundException e) {
        
                e.printStackTrace();
            }
            PrintStream printStream = new PrintStream(fileOutputStream);
            System.setOut(printStream);
    
            try {
        
                MyThread myThread = new MyThread();
                myThread.start();
                Thread.sleep(2000);
                myThread.interrupt();
            } catch (InterruptedException e) {
        
                System.out.println("main catch");
                e.printStackTrace();
            }
            System.out.println("end!!");
        }
    }

##### `执行结果` #####

timer = 1541148698257
    timer = 1541148698257
    timer = 1541148698257
    timer = 1541148698257
    timer = 1541148698257
    timer = 1541148698257
    timer = 1541148698257
    timer = 1541148698257
    timer = 1541148698258
    timer = 1541148698258
    timer = 1541148698258
    timer = 1541148698258
    timer = 1541148698258
    timer = 1541148698258
    end!!
    停止了！！

##### `结论` #####

`如上，将interrupt()和return结合使用也能实现停止线程的效果`

###### `不过还是建议使用“抛异常”法来实现线程的停止，因为在catch块中可以对异常的信息进行相关的处理，而且使用异常流能更好、更方便的控制程序的运行流程，不至于代码中出现多个return;造成污染。` ######