The difference between thread start method and run method calls

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1. Thread status

1. NEWNew status
2. Runnable ready state
3. Running status
4. blocking state
5. state of death

2. The difference between directly calling the run method of a thread and calling the start method of a thread

1. Directly call the run method of the thread

当我们调用Thread线程run方法时，是没有开启额外线程，这里只是调用了一个普通方法,
线程先是就绪状态才能进入到运行状态，这里是主线程把它当成了一个普通方法来调用
而run方法真正的意义是当线程start后进入就绪状态后被调度或者cpu时间片执行run方法由就绪态进入运行态

		Thread thread = new Thread(){
    
    
            @Override
            public void run() {
    
    
                System.out.println("输出语句");
            }
        };
        thread.run();

2. Call the start method of the thread

		Thread thread = new Thread(){
    
    
            @Override
            public void run() {
    
    
                System.out.println("输出语句");
            }
        };
        System.out.println(thread.getState());//NEW新建状态
        thread.start();
        System.out.println(thread.getState());//Runnable就绪状态

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Summarize

当我们调用Thread线程run方法时，是没有开启额外线程，这里只是调用了一个普通方法,
线程先是就绪状态才能进入到运行状态，这里是主线程把它当成了一个普通方法来调用
而run方法真正的意义是当线程start后进入就绪状态后被调度获得cpu时间片执行run方法由就绪态进入运行态