java中菜单设置助记键_如何在Java中设置按钮中的单键助记符？

我正在一个项目上,我想在按钮上设置助记符.但是问题是助记符在配对键示例(Alt F)等上起作用.但是我希望它在单个键上.

解决方法:

>查看KeyBindings,

>然后您可以将任何键附加到JButton

这是帮助您的示例代码,只需按键盘上的C即可：

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.Action;

public class ButtonExample

{

private JFrame frame;

private JButton button;

private void displayGUI()

{

frame = new JFrame("Button Mnemonic Example");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JPanel contentPane = new JPanel();

Action buttonAction = new ButtonAction("CLICK ME"

, "This is a Click Me JButton");

button = new JButton(buttonAction);

button.getInputMap().put(KeyStroke.getKeyStroke('c'), "Click Me Button");

button.getActionMap().put("Click Me Button", buttonAction);

contentPane.add(button);

frame.setContentPane(contentPane);

frame.pack();

frame.setLocationByPlatform(true);

frame.setVisible(true);

}

class ButtonAction extends AbstractAction

{

public ButtonAction(String text, String desc)

{

super(text);

putValue(SHORT_DESCRIPTION, desc);

}

@Override

public void actionPerformed(ActionEvent ae)

{

JOptionPane.showMessageDialog(frame, "BINGO, you SAW me.");

}

}

public static void main(String... args)

{

SwingUtilities.invokeLater(new Runnable()

{

public void run()

{

new ButtonExample().displayGUI();

}

});

}

}

标签：java,swing,key-bindings,jbutton

来源： https://codeday.me/bug/20191010/1887057.html