frame1.java

是用java开发的一些程序原代码 是用java开发的一些程序原代码

package ex10_05;

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

public class Frame1 extends JFrame {
  JPanel contentPane;
  JComboBox jComboBox1 = new JComboBox();
  JScrollPane jScrollPane1 = new JScrollPane();
  JList jList1 = new JList();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();

  /**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(null);
    this.setSize(new Dimension(400, 300));
    this.setTitle("Frame Title");
    this.addWindowListener(new java.awt.event.WindowAdapter() {
      public void windowOpened(WindowEvent e) {
        this_windowOpened(e);
      }
    });
    jComboBox1.setBounds(new Rectangle(184, 27, 127, 23));
    jScrollPane1.setBounds(new Rectangle(28, 26, 139, 102));
    jButton1.setText("加入");
    jButton1.setBounds(new Rectangle(204, 60, 79, 29));
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    jButton2.setText("删除");
    jButton2.setBounds(new Rectangle(205, 96, 79, 29));
    jButton2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton2_actionPerformed(e);
      }
    });
    contentPane.add(jComboBox1, null);
    contentPane.add(jScrollPane1, null);
    contentPane.add(jButton2, null);
    contentPane.add(jButton1, null);
    jScrollPane1.getViewport().add(jList1, null);
  }
  /**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);
    }
  }
  //声明向量对象
Vector myvector = new Vector();
  void this_windowOpened(WindowEvent e) {
 //加入列表项目
 jComboBox1.addItem("香蕉");
 jComboBox1.addItem("芭蕉");
 jComboBox1.addItem("凤梨");
 jComboBox1.addItem("苹果");
 jComboBox1.addItem("葡萄");
  }

  void jButton1_actionPerformed(ActionEvent e) {
//加入综合列表框内的资料成为Vector对象的新元素
myvector.addElement(jComboBox1.getSelectedItem());
//重新定义jList组件内的待选项目
jList1.setListData(myvector);
  }

  void jButton2_actionPerformed(ActionEvent e) {
int index;
//取回jList组件中被选取的项目索引
index=jList1.getSelectedIndex();
if (index>=0) //先确认是否选定了项目
{
//依项目索引删除Vector对象内的元素
myvector.removeElementAt(index);
//重新定义jList组件内的待选项目
jList1.setListData(myvector);
}
  }
}