java 多线程

class MyThread extends Thread{
    private String name;
    public MyThread(String name){
        this.name=name;
    }
    public void run(){
        for(int i=0;i<10;i++){
            System.out.println(name+"运行，i="+i);
        }
    }
}
public class ThreadDemo {
    public static void main(String[] args) {
        MyThread mt1=new MyThread("线程A");
        MyThread mt2=new MyThread("线程B");
        mt1.start();
        mt2.start();
    }

}

注意，用的是start方法，而不是run方法