Java开发网 - 资询调用toString( )产生无法无盖Object中的toString()错误的问题

Topic: 资询调用toString( )产生无法无盖Object中的toString()错误的问题

1.资询调用toString( )产生无法无盖Object中的toString()错误的问题	Copy to clipboard
Posted by: zmj888 Posted on: 2005-12-19 23:21 我在产生Date类time后调用time.toString()发生变异错误。信息如下： Date中的toString()无法覆盖java.lang.Object中的toString()；正在尝试指定更低访问权限;为public 请问这是什么原因呢？我查了一下src，Date类中的toString()是public的阿？是不是非要重写呢？

2.Re:资询调用toString( )产生无法无盖Object中的toString()错误的问题 [Re: zmj888]	Copy to clipboard
Posted by: why Posted on: 2005-12-19 23:52 please show us your source code

3.Re:资询调用toString( )产生无法无盖Object中的toString()错误的问题 [Re: zmj888]

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Posted by: zmj888
Posted on: 2005-12-20 00:26

怎么才能不让我的缩进格式消失呢？ { use [code ] tag -- why }


import javax.swing.JFrame;
import java.util.*;
import java.text.*;
import java.awt.*;
public class SimpleClock extends TimerTask {
    final static long MILLISECONDS_PER_SECOND=1000;
    private JFrame window=new JFrame("Clock");
    private java.util.Timer timer=new java.util.Timer();
    private String clockFace="";
    
    //SimpleClock():default constructor
    public SimpleClock(){
      window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      window.setSize(200,60);
      Container c=window.getContentPane();
      c.setBackground(Color.white);
      window.setVisible(true);
      
      timer.schedule(this,0,1*MILLISECONDS_PER_SECOND);  
    }

    
    public void run(){
      Date time= new Date();
      Graphics g=window.getContentPane().getGraphics();
      
      g.setColor(Color.white);
      g.drawString(clockFace,10,20);
      
      clockFace=time.toString();
      
      g.setColor(Color.blue);
      g.drawString(clockFace,10,20);  
    }
    
    public static void main(String args[]){
      SimpleClock clock=new SimpleClock();  
    }
}

4.Re:资询调用toString( )产生无法无盖Object中的toString()错误的问题 [Re: zmj888]	Copy to clipboard
Posted by: why Posted on: 2005-12-20 01:46 Looks okay... Just tried on my computer, it's fine. Sorry I don't understand (try to understand) what the Chinese error message says. Hope that someone else could help you.

5.Re:资询调用toString( )产生无法无盖Object中的toString()错误的问题 [Re: zmj888]	Copy to clipboard
Posted by: zmj888 Posted on: 2005-12-20 13:27 看来我要从jdk1.5里找原因了，1.5改动了很多东西，麻烦why先生了，thanks

6.Re:资询调用toString( )产生无法无盖Object中的toString()错误的问题 [Re: zmj888]	Copy to clipboard
Posted by: why Posted on: 2005-12-20 16:03 zmj888 wrote: 看来我要从jdk1.5里找原因了，1.5改动了很多东西 I don't think you should spend the time to dig into this. FYI (for your information), I was compiling and running your code with JDK 1.5.0_06. What is 变异错误??