?? frame1.java
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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("刪除"); 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); } } //聲明向量對象Vector myvector = new Vector(); void this_windowOpened(WindowEvent e) { //加入列表項目 jComboBox1.addItem("香蕉"); jComboBox1.addItem("芭蕉"); jComboBox1.addItem("鳳梨"); jComboBox1.addItem("蘋果"); jComboBox1.addItem("葡萄"); } void jButton1_actionPerformed(ActionEvent e) {//加入綜合列表框內的資料成為Vector對象的新元素myvector.addElement(jComboBox1.getSelectedItem());//重新定義jList組件內的待選項目jList1.setListData(myvector); } void jButton2_actionPerformed(ActionEvent e) {int index;//取回jList組件中被選取的項目索引index=jList1.getSelectedIndex();if (index>=0) //先確認是否選定了項目{//依項目索引刪除Vector對象內的元素myvector.removeElementAt(index);//重新定義jList組件內的待選項目jList1.setListData(myvector);} }}
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