Java开发网 - 请问大虾门为什么没有button呀

Topic: 请问大虾门为什么没有button呀

1.请问大虾门为什么没有button呀

Posted by: wangyabing
Posted on: 2005-12-26 11:06

原代码：
/**
* AWT Sample application
*
* @author
* @version 1.00 05/12/26
*/
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

public class Wang {

public static void main(String[] args)
{
// Create application frame.
WangFrame frame = new WangFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.show();

// Show frame
frame.setVisible(true);
}
}
class WangFrame extends JFrame
{
  public WangFrame ()
  {setTitle("BorderExample");
    setSize(WIDTH, HEIGHT);
    //Use pack() method
    //JButton jButton9 = new JButton();
// jButton9.addMouseListener(new MouseAdapter()

  //单击jButton9时,出现history_1窗口
// public void mouseReleased(MouseEvent e) { history_1.setVisible(true);}
//(JPanel) getContentPane().add( jButton9 )



    JPanel textPanel = new JPanel();

    //增加相应的文本框
    for (int i = 0; i <3; i++ )
    {
      JTextField addText = new JTextField("wang" + i, 10);
      textPanel.add(addText);
    }

    contentPane.add(textPanel);


    buttonPanel = new JPanel();
    //增加相应的按钮
    for (int i = 0; i < 3; i++ )
    {
      JButton addButton = new JButton("add" + i);
      buttonPanel.add(addButton);
    }
    group = new ButtonGroup();

    //添加按钮和事件监视器
    //低斜面边界
    addRadioButton("Lowered bevel", BorderFactory.createLoweredBevelBorder());

    //凸斜面边界
    addRadioButton("Raised bevel",
      BorderFactory.createRaisedBevelBorder());

    //蚀刻边界
    addRadioButton("Etched",
      BorderFactory.createEtchedBorder());

    //直线边界
    addRadioButton("Line",
      BorderFactory.createLineBorder(Color.blue));

    //不光滑边界
    addRadioButton("Matte",
      BorderFactory.createMatteBorder(5, 5, 5, 5, Color.yellow));

    //空边界
    addRadioButton("Empty",
      BorderFactory.createEmptyBorder());

    //初始化带标题的空边界
    Border border = BorderFactory.createEmptyBorder();
    Border titled = BorderFactory.createTitledBorder(border, "Border types");

    //给面板设置给定的边界
    buttonPanel.setBorder(titled);

Container contentPane = getContentPane();
    contentPane.add(buttonPanel);




  }
  public void addRadioButton(String buttonName, final Border b)
  {
    JRadioButton button = new JRadioButton(buttonName);
    button.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent event)
        {
          Border titled = BorderFactory.createTitledBorder
            (b, "Border types");
          buttonPanel.setBorder(titled);

          //重新显示
          validate();
        }
      });

    group.add(button);
    buttonPanel.add(button);
  }

  public static final int WIDTH = 500;
  public static final int HEIGHT = 200;

  private JPanel buttonPanel;
  private ButtonGroup group;

}
在执行后没有出现button

2.Re:请问大虾门为什么没有button呀 [Re: wangyabing]	Copy to clipboard
Posted by: why Posted on: 2006-01-01 20:13 contentPane.add(textPanel); ===> getContentPane().add(textPanel); the textPanel is covered by the buttonPanel, use something like: // contentPane.add(textPanel); ... Container contentPane = getContentPane(); contentPane.add("North", textPanel); contentPane.add("South", buttonPanel);

3.Re:请问大虾门为什么没有button呀 [Re: wangyabing]	Copy to clipboard
Posted by: wangyabing Posted on: 2006-01-01 21:47 谢谢問題兒童