public MyCalculator() { f = new JFrame("计算器ByMdou"); Container contentPane = f.getContentPane(); /****************菜单的创建开始**************************************/ JMenuBar mBar = new JMenuBar(); mBar.setOpaque(true); mEdit = new JMenu("编辑(E)"); mEdit.setMnemonic(KeyEvent.VK_E); mCopy = new JMenuItem("复制(C)"); mEdit.add(mCopy); mPaste = new JMenuItem("粘贴(P)"); mEdit.add(mPaste); mView = new JMenu("查看(V)"); mView.setMnemonic(KeyEvent.VK_V); mView.add(new JMenuItem("标准型")); mView.add(new JMenuItem("科学型")); mView.addSeparator(); mView.add(new JMenuItem("查看分组")); mHelp = new JMenu("帮助(H)"); mHelp.setMnemonic(KeyEvent.VK_H); mHelp.add(new JMenuItem("帮助主题")); mHelp.addSeparator(); mHelp.add(new JMenuItem("关于计算器")); mBar.add(mEdit); mBar.add(mView); mBar.add(mHelp); f.setJMenuBar(mBar); contentPane.setLayout(new BorderLayout()); JPanel pTop = new JPanel(); tResult = new JTextField("0.",26); tResult.setHorizontalAlignment(JTextField.RIGHT ); tResult.setEditable(false); pTop.add(tResult); contentPane.add(pTop,BorderLayout.NORTH); JPanel pBottom = new JPanel(); pBottom.setLayout(new BorderLayout()); JPanel pLeft = new JPanel(); pLeft.setLayout(new GridLayout(5,1,3,3)); bM = new JButton(" "); bM.setEnabled(false); pLeft.add(bM); bOther = new JButton("MC"); bOther.addActionListener(this); bOther.setForeground(Color.RED); bOther.setMargin(new Insets(3,2,3,2)); pLeft.add(bOther); bOther = new JButton("MR"); bOther.addActionListener(this); bOther.setForeground(Color.RED); bOther.setMargin(new Insets(3,2,3,2)); pLeft.add(bOther); bOther = new JButton("MS"); bOther.addActionListener(this); bOther.setForeground(Color.RED); bOther.setMargin(new Insets(3,2,3,2)); pLeft.add(bOther); bOther = new JButton("M+"); bOther.addActionListener(this); bOther.setForeground(Color.RED); bOther.setMargin(new Insets(3,2,3,2)); pLeft.add(bOther);
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