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作者 不知道这种问题怎么解决,请指教 !!!
phelensophia





发贴: 4
积分: 0
于 2005-03-03 13:04 user profilesend a private message to usersearch all posts byselect and copy to clipboard. 
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import awt.* ;
import awt.event.* ;
import swing.* ;

public class CenterFrame_T
{
public static void main ( String [] args )
{
CenterFrame Frame = new CenterFrame() ;
Frame.setDufatltCloseOperation(Jframe.EXIT_ON_EXIT) ;
Frame.show() ;
}
class CenterFrame extends JFrame
{
  // Get Screen Dimensions
        
Toolkit kit = Toolkit.getDefaultToolkit() ;
Dimension screenSize = kit.getScreenSize() ;
int screenHeight = screenSize.height ;
int screenWidth = screenSize.width ;
        
  // Center frame in screen
        
setSize(screenWidth/2 , screenHeight / 2) ;
setLocation(screenWidth/4 , screenHeight / 4) ;
        
   }
  }

我用的教材是 Core Java 第 240 页 的例子,怎么都调试不通,不知是何原因。
总是报错:请高手指教。
CenterFrame_T.java:24: invalid method declaration; return type required
setSize(screenWidth/2 , screenHeight / 2) ;
^
CenterFrame_T.java:24: <identifier> expected
setSize(screenWidth/2 , screenHeight / 2) ;
^
CenterFrame_T.java:24: ')' expected
setSize(screenWidth/2 , screenHeight / 2) ;
^
CenterFrame_T.java:25: invalid method declaration; return type required
setLocation(screenWidth/4 , screenHeight / 4) ;
^
CenterFrame_T.java:25: <identifier> expected
setLocation(screenWidth/4 , screenHeight / 4) ;
^
CenterFrame_T.java:25: ')' expected
setLocation(screenWidth/4 , screenHeight / 4) ;
^
6 errors




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人气 标题 作者 字数 发贴时间
4028 不知道这种问题怎么解决,请指教 !!! phelensophia 1983 2005-03-03 13:04
2994 Re:不知道这种问题怎么解决,请指教 !!! cnfree 750 2005-03-03 14:03

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