解决——》Exception in thread "main" java.lang.IllegalThreadStateException

小灰灰 2024-02-19 18:22 58阅读 0赞

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[https://blog.csdn.net/weixin\_43453386/article/details/88218818][https_blog.csdn.net_weixin_43453386_article_details_88218818]

#### 解决——》Exception in thread "main" java.lang.IllegalThreadStateException ####

*   *  1、操作
     *  2、现象（错误信息）
     *  3、原因
     *  4、解决
     *   *  修改之前的代码
         *  修改过后的代码

IllegalThreadStateException)

### 1、操作 ###

`重复调用线程的start()方法`

### 2、现象（错误信息） ###

Exception in thread "main" java.lang.IllegalThreadStateException
    	at java.lang.Thread.start(Thread.java:708)
    	at com.lz.springcloud.xwlvapi.utils.TT.main(TT.java:9)

### 3、原因 ###

`同一个Thread不能重复调用start方法`

### 4、解决 ###

#### 修改之前的代码 ####

public class TT {
        
        public static void main(String[] args) {
        
            MyThread m1 = new MyThread("线程A");
            MyThread m2 = new MyThread("线程B");
            MyThread m3 = new MyThread("线程C");
            m1.start();
            m1.start();
            m2.start();
            m3.start();
        }
    }
    class MyThread extends Thread {
        
        private String name;
    
    
        public MyThread(String name) {
        
            this.name = name;
        }
    
        public void run() {
        
            for (int x = 0; x < 10; x++) {
        
                System.out.println(this.name + "x=" + x);
            }
        }
    }

#### 修改过后的代码 ####

public class TT {
        
        public static void main(String[] args) {
        
            MyThread m1 = new MyThread("线程A");
            MyThread m2 = new MyThread("线程B");
            MyThread m3 = new MyThread("线程C");
            m1.start();
            //线程不能重复调用start()方法
            //m1.start();
            m2.start();
            m3.start();
        }
    }
    class MyThread extends Thread {
        
        private String name;
    
    
        public MyThread(String name) {
        
            this.name = name;
        }
    
        public void run() {
        
            for (int x = 0; x < 10; x++) {
        
                System.out.println(this.name + "x=" + x);
            }
        }
    }

[https_blog.csdn.net_weixin_43453386_article_details_88218818]: https://blog.csdn.net/weixin_43453386/article/details/88218818