frame1.java~12~

很好得jbuilder100例源代码

package list;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Frame1 extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();
  Panel panel1 = new Panel();
  TextField textField1 = new TextField();
  Button button1 = new Button();
  Button button2 = new Button();
  TextArea textArea1 = new TextArea();
  List l = null,p;

  /**Construct the frame*/
  public Frame1() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(328, 249));
    this.setTitle("在Java中实现链表");
    button1.setLabel("Add");
    button1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button1_actionPerformed(e);
      }
    });
    button2.setLabel("List");
    button2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        button2_actionPerformed(e);
      }
    });
    textField1.setColumns(10);
    textArea1.setBackground(Color.lightGray);
    textArea1.setEditable(false);
    contentPane.add(panel1, BorderLayout.NORTH);
    panel1.add(textField1, null);
    panel1.add(button1, null);
    panel1.add(button2, null);
    contentPane.add(textArea1, BorderLayout.CENTER);
  }
  /**Overridden so we can exit when window is closed*/
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void button1_actionPerformed(ActionEvent e) {
    String data = new String(textField1.getText());
    if (data!= null){
      p = new List(textField1.getText());
      if( l == null )
        l = p;
      else
	l = p.add( l );
      textField1.setText("");
      textField1.requestFocus();
    }
  }

  void button2_actionPerformed(ActionEvent e) {
    textArea1.setText("");
    textArea1.setText(l.toString());
  }
}