问题描述

新手求助关于Java多线程中启动线程问题

public class Example15_1 {

/** * @param args */public static void main(String[] args) {    // TODO Auto-generated method stub     SpeakHello speakHello;     SpeakNinhao speakNinhao;     speakHello = new SpeakHello();     speakNinhao= new SpeakNinhao();     speakHello.start();     speakNinhao.start();     for(int i=1;i<=5;i++){      System.out.println(""大家好""+i+"""");     }     }

}
public class SpeakHello extends Thread {
public void run(){
for(int i=1;i<=7;i++){
System.out.println(""hello""+i+"""");
}
}
}
public class SpeakNinhao {
public void run(){
for(int i=1;i<=7;i++){
System.out.println(""ninhao""+i+"""");
}
}
}
speakNinhao.start();这个语句Myeclipse里面报错:The method start()is undefined for the type 'SpeakNinhao'.我发现即使在SpeakNinhao类里面写一个start()也不能通过编译。谁知道如何改

解决方案

SpeakNinhao类没有继承Thread类

解决方案二：
与一楼见解一致，需要继承thread类或实现runnable接口