yorndia.java

JTREE的例子

package util5;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import util2.*;
import util3.*;
import util4.*;

public class YorNDia extends JDialog
{
  JLabel lab=new JLabel("");
  JPanel pan=new JPanel(new BorderLayout(10,10));
  JButton okBut=new JButton("Yes");
  JButton noBut=new JButton("No");
  YorNListener listener;

  public YorNDia(Frame frame,String title,boolean modal){
    super(frame,title,modal);
    JPanel p=new JPanel(new FlowLayout(2,20,12));
    p.add(this.okBut);
    p.add(this.noBut);
    this.getContentPane().add(pan,BorderLayout.CENTER);
    this.getContentPane().add(new JLabel("   "),BorderLayout.WEST);
    pan.add(this.lab,BorderLayout.CENTER);
    pan.add(p,BorderLayout.SOUTH);
    setBounds(200,180,400,140);

    okBut.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e){
        YorNDia.this.listener.gotYes(YorNListener.yes);
        YorNDia.this.listener=null;
        YorNDia.this.setVisible(false);
      }
    });

    noBut.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e){
        YorNDia.this.setVisible(false);
        YorNDia.this.listener.gotYes(YorNListener.no);
      }
    });

    this.addWindowListener(new WindowAdapter(){
      public void windowClosing(WindowEvent e) {
        YorNDia.this.listener.gotYes(YorNListener.cancel);
        YorNDia.this.listener=null;
        YorNDia.this.setVisible(false);
      }
    });
  }

  public void setLab(String text){
    this.lab.setText(text);
  }

  public void addYorNListener(YorNListener listener){
    this.listener=listener;
    this.show();
  }

  public static void main(String art[]){
    Frame f=new Frame("");
    YorNDia d=new YorNDia(f,"",false);
    d.show();
  }
}