小例子,100%JAVA,有ALT+KEY
package downtimemodule;import javax.swing.*;import java.awt.*;import java.awt.event.*;public class SwingApplication { private static String labelPrefix = "Number of button clicks: "; private int numClicks = 0; //计数器，计算点击次数 public Component createComponents() { final JLabel label = new JLabel(labelPrefix + "0 "); JButton button = new JButton("I'm a Swing button!"); button.setMnemonic(KeyEvent.VK_I); //设置按钮的热键为'I',这样设置有下划线,ALT+键 button.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { numClicks++; label.setText(labelPrefix + numClicks); } }); label.setLabelFor(button); JPanel pane = new JPanel(); pane.setBorder(BorderFactory.createEmptyBorder( 30, //top 30, //left 10, //bottom 30) //right ); pane.setLayout(new GridLayout(0, 1)); //单列多行 pane.add(button); pane.add(label); return pane; } public static void main(String[] args) { try { UIManager.setLookAndFeel( UIManager.getCrossPlatformLookAndFeelClassName()); } catch (Exception e) { } JFrame frame = new JFrame("SwingApplication"); SwingApplication app = new SwingApplication(); Component contents = app.createComponents(); frame.getContentPane().add(contents, BorderLayout.CENTER);//窗口设置结束，开始显示 frame.addWindowListener(new WindowAdapter() {//匿名类用于注册监听器 @Override public void windowClosing(WindowEvent e) { System.exit(0); } }); frame.pack(); frame.setVisible(true); }}