1.继承Thread基类
public class Demo2_Thread {
public static void main(String[] args) {
MyThread mt = new MyThread();
mt.start();
for(int i = 0; i < 1000; ++i)
System.out.println("222");
}
}
class MyThread extends Thread{
@Override
public void run() {
for(int i = 0; i < 1000; ++i){
System.out.println("这是一个线程");
}
}
}