使用了簡單的JFrame窗口，在窗口中添加菜單，菜單選項，點擊鼠標右鍵出現右鍵菜單，用io流將輸入文本域的內容保存。并設置熱鍵alt+x為退出的熱鍵
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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)"); |
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//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); } } }); |
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// 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; } } }); |
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//文件保存窗口，用隨機數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.設置監聽事件。2.設置熱鍵alt+x關閉窗口3.設置觸發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：
到此這篇關于Java給JFrame窗口設置熱鍵的方法實現的文章就介紹到這了,更多相關Java JFrame窗口熱鍵內容請搜索服務器之家以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持服務器之家！
原文鏈接：https://blog.csdn.net/weixin_45444295/article/details/107409217
