第7

选择题：A B C C A D

package cn.jbit.thread.k1;

public class Kao1{
public static void main(String[] args) {
Mythread thread1 = new Mythread();
kao1.start();
}
}
class Mythread extends Thread{
public void run(){
for(int i=1;i<=5;i++){
}

2.package cn.jbit.thread.k1;

public class Kao1 {
public static void main(String[] args) {
Thread kao1 = new Thread(new Mythread2());
kao1.start();
}
}
class Mythread2 implements Runnable{
public void run(){
for(int i=1;i<=5;i++){
System.out.println(Thread.currentThread().getName()+":"+i);
}
}