第一个Article Demo

class RunIt{
    public void getInfo(){
        try{
           Thread td = Thread.currentThread();
            for(int i = 0; i < 5; i++){
                Thread.sleep(10000);
                System.out.println("线程名称:" + td.getName()
                + "线程ID: " + td.getId()
                + "-> " + i);
            }  
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

class ThreadDemo extends Thread{
    
    private RunIt ri;
    
    public ThreadDemo(RunIt ri){
        this.ri = ri;
    }
    
    @Override
    public void run(){
        ri.getInfo();
    }
}

public class HelloWorld{
    public static void main(String[] args){
        RunIt ri = new RunIt();
        ThreadDemo td01 = new ThreadDemo(ri):
        ThreadDemo td02 = new ThreadDemo(ri);
        ThreadDemo td03 = new ThreadDemo(ri);
        td01.start();
        td02.start();
        td03.start(); 
    }
    
}

线程名称:Thread-1线程ID: 14-> 0
线程名称:Thread-0线程ID: 13-> 0
线程名称:Thread-2线程ID: 15-> 0
线程名称:Thread-1线程ID: 14-> 1
线程名称:Thread-2线程ID: 15-> 1
线程名称:Thread-0线程ID: 13-> 1
线程名称:Thread-1线程ID: 14-> 2
线程名称:Thread-0线程ID: 13-> 2
线程名称:Thread-2线程ID: 15-> 2
线程名称:Thread-1线程ID: 14-> 3
线程名称:Thread-0线程ID: 13-> 3
线程名称:Thread-2线程ID: 15-> 3
线程名称:Thread-1线程ID: 14-> 4
线程名称:Thread-0线程ID: 13-> 4
线程名称:Thread-2线程ID: 15-> 4

synchronized void getInfo(){
    try{
        Thread td = Thread.currentThread();
        for(int i = 0; i < 5; i++){
            Thread.sleep(1000);
            System.out.println("线程名称: " + Thread.getName()
            + "线程ID: " + Thread.getId()
            + "-> " + i);
        }
    }catch(Exception e){
        e.printStackTrace():
    }
}

线程名称:Thread-0线程ID: 13-> 0
线程名称:Thread-0线程ID: 13-> 1
线程名称:Thread-0线程ID: 13-> 2
线程名称:Thread-0线程ID: 13-> 3
线程名称:Thread-0线程ID: 13-> 4
线程名称:Thread-2线程ID: 15-> 0
线程名称:Thread-2线程ID: 15-> 1
线程名称:Thread-2线程ID: 15-> 2
线程名称:Thread-2线程ID: 15-> 3
线程名称:Thread-2线程ID: 15-> 4
线程名称:Thread-1线程ID: 14-> 0
线程名称:Thread-1线程ID: 14-> 1
线程名称:Thread-1线程ID: 14-> 2
线程名称:Thread-1线程ID: 14-> 3
线程名称:Thread-1线程ID: 14-> 4