第三方包jintellitype实现Java设置全局热键

 package com.jebysun.globlehotkey;  import java.awt.Insets; import java.awt.event.ActionEvent; import java.awt.event.ActionListener;  import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JOptionPane;  import com.melloware.jintellitype.HotkeyListener; import com.melloware.jintellitype.JIntellitype;  /** * 利用JIntellitype实现全局热键设置 * @author Jeby Sun * */ public class GlobleHotKeyDemo extends JFrame {    private static final long serialVersionUID = 1L;      //定义热键标识，用于在设置多个热键时，在事件处理中区分用户按下的热键   public static final int FUNC_KEY_MARK = 1;   public static final int EXIT_KEY_MARK = 0;      JButton msgBtn;   JButton exitBtn;    public GlobleHotKeyDemo() {     this.setTitle("全局热键设置");     this.setBounds(100, 100, 600, 400);     this.setLayout(null);     this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);          msgBtn = new JButton("弹出框（Alt+S）");     //设置按钮边距     msgBtn.setMargin(new Insets(0,0,0,0));     msgBtn.setFocusable(false);     msgBtn.setBounds(20, 20, 120, 30);     msgBtn.addActionListener(new ActionListener() {       @Override       public void actionPerformed(ActionEvent e) {         showMessage();       }     });     this.add(msgBtn);          exitBtn = new JButton("退出（Alt+Q）");     exitBtn.setMargin(new Insets(0,0,0,0));     exitBtn.setFocusable(false);     exitBtn.setBounds(160, 20, 120, 30);     exitBtn.addActionListener(new ActionListener() {       @Override       public void actionPerformed(ActionEvent e) {         System.exit(0);       }     });     this.add(exitBtn);          //第一步：注册热键，第一个参数表示该热键的标识，第二个参数表示组合键，如果没有则为0，第三个参数为定义的主要热键     JIntellitype.getInstance().registerHotKey(FUNC_KEY_MARK, JIntellitype.MOD_ALT, (int)'S');      JIntellitype.getInstance().registerHotKey(EXIT_KEY_MARK, JIntellitype.MOD_ALT, (int)'Q');           //第二步：添加热键监听器     JIntellitype.getInstance().addHotKeyListener(new HotkeyListener() {              @Override       public void onHotKey(int markCode) {         switch (markCode) {          case FUNC_KEY_MARK:            showMessage();           break;          case EXIT_KEY_MARK:            System.exit(0);           break;           }                }     });           this.setVisible(true);   }      public void showMessage() {     JOptionPane.showMessageDialog(null, "就算把窗口最小化，按快捷键Alt+S也可以弹出提示框哦！", "弹出框标题", JOptionPane.INFORMATION_MESSAGE);   }      public static void main(String[] args) {     new GlobleHotKeyDemo();   } }