?? mainframe.java
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package jdriverdemo;import java.awt.*;import java.awt.event.*;import javax.swing.*;import java.io.*;public class MainFrame extends JFrame { private JPanel contentPane; private BorderLayout borderLayout1 = new BorderLayout(); private JComboBox drivers ; //Construct the frame public MainFrame() { enableEvents(AWTEvent.WINDOW_EVENT_MASK); try { jbInit(); } catch(Exception e) { e.printStackTrace(); } } //Component initialization private void jbInit() throws Exception { File[] dvs = File.listRoots(); String[] names = new String[dvs.length]; System.out.println(dvs.length); for (int i=0;i<dvs.length;i++){ names[i]=dvs[i].getPath(); System.out.println(names[i]); } drivers = new JComboBox(names); //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]"))); contentPane = (JPanel) this.getContentPane(); contentPane.setLayout(borderLayout1); this.setSize(new Dimension(394, 53)); this.setTitle("JDriverDemo"); drivers.setFont(new java.awt.Font("Dialog", 0, 14)); drivers.setAutoscrolls(true); drivers.setDoubleBuffered(true); contentPane.add(drivers, 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); } }}?? 快捷鍵說明
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