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用Thread父类的构造方法的时候编译出错；求帮助

© 曾林魁中级黑马 / 2013-5-25 17:49 / 1622 人查看 / 2 人回复 / 0 人收藏转载请遵从CC协议禁止商业使用本文

本帖最后由曾林魁于 2013-5-30 12:20 编辑

class ThreadDemo1 extends Thread
{
void ThreadDemo1(){}
void ThreadDemo1(String name)
{
super(name);
}
public void run()
{
for (int i = 0;i<=100 ;i++ )
{
System.out.println(this.getName()+"this is a instance of thread");
}
}
public static void main(String[] args)
{
ThreadDemo1 t1= new ThreadDemo1("线程1");
ThreadDemo1 t2= new ThreadDemo1("线程2");
//ThreadDemo1 t1= new ThreadDemo1();
//ThreadDemo1 t2= new ThreadDemo1();
t1.start();
t2.start();
System.out.println("Hello World!");
}
}

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编译提醒无法调用构造器怎么回事？

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2 个回复

正序浏览

simonqian 中级黑马 2013-5-25 17:59:28

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藤椅

本帖最后由 simonqian 于 2013-5-25 18:01 编辑

class ThreadDemo1 extends Thread
{
ThreadDemo1(){}
ThreadDemo1(String name)
{
super(name);
}
public void run()
{
for (int i = 0;i<=100 ;i++ )
{
System.out.println(this.getName()+"this is a instance of thread");
}
}
public static void main(String[] args)
{
ThreadDemo1 t1= new ThreadDemo1("线程1");
ThreadDemo1 t2= new ThreadDemo1("线程2");
//ThreadDemo1 t1= new ThreadDemo1();
//ThreadDemo1 t2= new ThreadDemo1();
t1.start();
t2.start();
System.out.println("Hello World!");
}
}

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构造方法是不需要返回类型的

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王靖远 金牌黑马 2013-5-25 17:56:43

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沙发

class ThreadDemo1 extends Thread
{
void ThreadDemo1(){}//void 去掉
void ThreadDemo1(String name)//void去掉
{
super(name);
}
public void run()
{
for (int i = 0;i<=100 ;i++ )
{
System.out.println(this.getName()+"this is a instance of thread");
}
}
public static void main(String[] args)
{
ThreadDemo1 t1= new ThreadDemo1("线程1");
ThreadDemo1 t2= new ThreadDemo1("线程2");
//ThreadDemo1 t1= new ThreadDemo1();
//ThreadDemo1 t2= new ThreadDemo1();
t1.start();
t2.start();
System.out.println("Hello World!");
}
}

复制代码

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