private void initUI() { // Create tabbed pane with commands in it tabbedPane = new JTabbedPane(); getContentPane().add(tabbedPane, BorderLayout.NORTH); tabbedPane.addTab("Book", null, createBookPane(), "View book information"); tabbedPane.addTab("Author", null, createAuthorPane(), "View author information"); tabbedPane.addTab("Customer", null, createCustomerPane(), "View customer information"); tabbedPane.addTab("Borrow Book", null, createBorrowPane(), "Borrow books for a customer"); tabbedPane.addTab("Return Book", null, createReturnPane(), "Return books for a customer"); // Create output area with scrollpane outputArea = new JTextArea(); // outputArea.setFont(new Font("Monospaced",Font.PLAIN,12)); outputArea.setFont(new Font("Monospaced", Font.ROMAN_BASELINE, 12)); outputArea.setEditable(false); outputArea.setFocusable(false); outputArea.setTabSize(2); JScrollPane sp = new JScrollPane(outputArea); sp.setVerticalScrollBarPolicy(VERTICAL_SCROLLBAR_ALWAYS); getContentPane().add(sp, BorderLayout.CENTER); // Create menus JMenu fileMenu = new JMenu("File"); fileMenu.setMnemonic('F'); JMenuItem clearTextMenuItem = new JMenuItem(clearTextAction); JMenuItem exitMenuItem = new JMenuItem(exitAction); fileMenu.add(clearTextMenuItem); fileMenu.addSeparator(); fileMenu.add(exitMenuItem); JMenuBar menuBar = new JMenuBar(); menuBar.add(fileMenu); setJMenuBar(menuBar); // Pack it all pack(); }