Java給JFrame窗口設置熱鍵的方法實現(xiàn)

更新時間：2020年07月19日 11:28:42 作者：盒子box

這篇文章主要介紹了Java給JFrame窗口設置熱鍵的方法實現(xiàn)，文中通過示例代碼以及圖文介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值，需要的朋友們下面來一起學習學習吧

使用了簡單的JFrame窗口，在窗口中添加菜單，菜單選項，點擊鼠標右鍵出現(xiàn)右鍵菜單，用io流將輸入文本域的內(nèi)容保存。并設置熱鍵alt+x為退出的熱鍵

public class MyNotepad extends JFrame{
 //菜單欄
 private JMenuBar jmb = new JMenuBar();
 //菜單
 private JMenu jmFile = new JMenu("文件(F)");
 private JMenu jmEdit = new JMenu("編輯(E)");
 private JMenu jmFormat = new JMenu("格式(O)");
 private JMenu jmFind = new JMenu("查看(V)");
 private JMenu jmHelp = new JMenu("幫助(H)");

//菜單項
private JMenuItem jmiNew = new JMenuItem("新建");
private JMenuItem jmiOpen = new JMenuItem("打開");
private JMenuItem jmiSave = new JMenuItem("保存");
private JMenuItem jmiOther = new JMenuItem("另存為");
private JMenuItem jmiExit = new JMenuItem("退出(X)");


private JCheckBoxMenuItem jmiAutoLine = new JCheckBoxMenuItem("自動換行");
private JMenuItem jmiFont = new JMenuItem("字體");

private JFileChooser jfc = new JFileChooser();

private JTextArea jta = new JTextArea();
private JScrollPane jsp = new JScrollPane(jta);

//上下文菜單
private JPopupMenu jpm = new JPopupMenu();
private JMenuItem jmiCopy = new JMenuItem("復制");
private JMenuItem jmiPaste = new JMenuItem("粘貼");

public MyNotepad() {
 this.setTitle("記事本");
 this.setSize(600,400);
 this.setLocationRelativeTo(null);
 this.setDefaultCloseOperation(EXIT_ON_CLOSE);
 
 this.add(jmb,BorderLayout.NORTH);
 
 jmb.add(jmFile);
 jmb.add(jmEdit);
 jmb.add(jmFormat);
 jmb.add(jmFind);
 jmb.add(jmHelp);
 
 jmFile.add(jmiNew);
 jmFile.add(jmiOpen);
 jmFile.add(jmiSave);
 jmFile.add(jmiOther);
 jmFile.addSeparator();
 jmFile.add(jmiExit);
 
 jmFormat.add(jmiAutoLine);
 jmFormat.add(jmiFont);
 
 //上下文菜單
 jpm.add(jmiCopy);
 jpm.add(jmiPaste);
 jpm.add(jmFile);
 jta.addMouseListener(new MouseAdapter() {
 public void mouseClicked(MouseEvent e) {
  if(e.getButton() == 3){
  jpm.show(jta, e.getX(), e.getY());
  }
 }
 });
 
 //文本域自動換行
 this.add(jsp,BorderLayout.CENTER);
 
 jmiAutoLine.addActionListener(new ActionListener() {
 public void actionPerformed(ActionEvent e) {
  boolean selected = jmiAutoLine.isSelected();
  if(selected){
  jta.setLineWrap(true);
  }else{
  jta.setLineWrap(false);
  }
 }
 });

// 文件新建窗口
 jmiNew.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  int choose = jfc.showOpenDialog(MyNotepad.this);
  switch (choose) {
  case JFileChooser.APPROVE_OPTION:
   System.out.println("點擊了打開");
   break;
  case JFileChooser.CANCEL_OPTION:
   System.out.println("點擊了取消");
   break;
  }
  }
 });

 //文件保存窗口，用隨機數(shù)命名文件名隨時保存進新的文件
    jmiSave.addActionListener(new ActionListener() {
  
  @Override
  public void actionPerformed(ActionEvent arg0) {
  Random r = new Random();
  int a = r.nextInt(100);
  File file = new File("D:\\桌面\\b"+"r"+"a.txt");
  try {
   FileOutputStream fis = new FileOutputStream(file,true);
   BufferedOutputStream bis = new BufferedOutputStream(fis);
   byte [] b = jta.getText().getBytes();
   try {
   bis.write(b);
   bis.flush();
   bis.close();
   } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   }
   
  } catch (FileNotFoundException e) {
   e.printStackTrace();
  }
  
  }
 });
 
 jmiExit.registerKeyboardAction(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  System.exit(0);
  }
 }, KeyStroke.getKeyStroke(KeyEvent.VK_X,KeyEvent.ALT_DOWN_MASK), 
  JComponent.WHEN_IN_FOCUSED_WINDOW);//1.設置監(jiān)聽事件。2.設置熱鍵alt+x關閉窗口3.設置觸發(fā)當鼠標聚焦在窗口時
 
 jmiExit.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  System.exit(0);
  }
 });
 
 this.setVisible(true);
 }
 
 public static void main(String[] args) {
 new MyNotepad();
 }
}

效果如下：