example8_4.java.bak

来自「不错的教程 适合中高级人员的使用」· BAK 代码 · 共 37 行

import java.awt.event.*;import java.awt.*;
import javax.swing.JOptionPane;
class Dwindow extends Frame implements ActionListener
{  TextField inputName;
   TextArea  save;
   Dwindow(String s)
   {  super(s);
      inputName=new TextField(22);inputName.addActionListener(this);
      save=new TextArea();
      add(inputName,BorderLayout.NORTH); add(save,BorderLayout.CENTER); 
      setBounds(60,60,300,300); setVisible(true);
      validate();
      addWindowListener(new WindowAdapter()
                      {   public void windowClosing(WindowEvent e)
                           { System.exit(0);
                           }
                      }
                   );
   }
   public void actionPerformed(ActionEvent e) 
   {  String s=inputName.getText();
      int n=JOptionPane.showConfirmDialog(this,"确认正确吗？","确认对话框",
                                               JOptionPane.YES_NO_OPTION );
      if(n==JOptionPane.YES_OPTION)  
        {  save.append("\n"+s);
        }  
      else if(n==JOptionPane.NO_OPTION)  
       { inputName.setText(null);
       }  
   }
}
public class Example8_5
{  public static void main(String args[]) 
   {  new Dwindow("带对话框的窗口");
   }
}