java小项目之文本编辑器

今天新做的一个文本编辑器小项目，功能尚有不完善的地方，主要演示快捷菜单的使用

界面展示如下

文本编辑器本来就比较简单，就简单做了一下，之后再把其他功能加上

下面代码：

public class Main {public static void main(String[] args) {new TextFrame();}}

public class TextFrame extends JFrame implements ActionListener {private static final long serialVersionUID = 1L;private JToolBar tBar;// 上面的快捷菜单private JComboBox<String> cbFont;// 字体private JComboBox<String> cbSize;// 字号（用过的字号可以添加到这里）private JCheckBox bold;// 粗体private JCheckBox italic;// 斜体private Font font;private String colorString[] = { "黑", "红", "绿", "蓝" };private Color color[] ;private JRadioButton rButton[] = new JRadioButton[colorString.length];// 颜色单选按钮private ButtonGroup bGroup;private JTextArea tArea;// 文本域private JMenuBar mBar;// 菜单栏private JMenu menuFile, menuEdite;// 菜单private JMenuItem mItemOpen, mItemExit, mItemSave;// 菜单项public TextFrame() {super("文本编辑器");int w = (int) Toolkit.getDefaultToolkit().getScreenSize().getWidth();int h = (int) Toolkit.getDefaultToolkit().getScreenSize().getHeight();setBounds(w / 4, h / 4, w / 2, h / 2);setDefaultCloseOperation(EXIT_ON_CLOSE);Container container = getContentPane();/////////////////// 菜单栏//////////////////////菜单栏功能尚未完善mBar = new JMenuBar();setJMenuBar(mBar);// 文件menuFile = new JMenu("文件");mBar.add(menuFile);mItemOpen = new JMenuItem("打开");menuFile.add(mItemOpen);mItemSave = new JMenuItem("保存");menuFile.add(mItemSave);menuFile.addSeparator();mItemExit = new JMenuItem("退出");menuFile.add(mItemExit);// 编辑menuEdite = new JMenu("编辑");mBar.add(menuEdite);/////////////////// 快捷菜单////////////////////tBar = new JToolBar();container.add(tBar, BorderLayout.NORTH);// 字体// 获取系统字体并添加到组合框GraphicsEnvironment gEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();String systemFont[] = gEnvironment.getAvailableFontFamilyNames();cbFont = new JComboBox<String>(systemFont);cbFont.setEditable(false);tBar.add(cbFont);cbFont.addActionListener(this);// 字号String fontSize[] = { "20", "30", "40", "50", "60" };cbSize = new JComboBox<String>(fontSize);cbSize.setEditable(true);tBar.add(cbSize);cbSize.addActionListener(this);// 粗体斜体（字体样式）bold = new JCheckBox("粗体");italic = new JCheckBox("斜体");tBar.add(bold);tBar.add(italic);bold.addActionListener(this);italic.addActionListener(this);// 颜色bGroup = new ButtonGroup();for (int i = 0; i < rButton.length; i++) {rButton[i] = new JRadioButton(colorString[i]);bGroup.add(rButton[i]);tBar.add(rButton[i]);rButton[i].addActionListener(this);}color = new Color[]{Color.black,Color.red,Color.green,Color.blue};/////////////////// 文本域////////////////////tArea = new JTextArea("每一个优秀的人背后都有一段默默努力的时光");container.add(tArea);//初始化cbFont.setSelectedItem("方正舒体");rButton[0].setSelected(true);setVisible(true);}//监听@Overridepublic void actionPerformed(ActionEvent e) {//字体，大小，样式，if(e.getSource() instanceof JComboBox || e.getSource() instanceof JCheckBox){//不能带泛型String fontString = (String) cbFont.getSelectedItem();String sizeString = (String) cbSize.getSelectedItem();try {int size = Integer.parseInt(sizeString);//eint style = tArea.getFont().getStyle();//获取当前字体样式//获取字体样式if(e.getSource() == bold){style = style^Font.BOLD;}if(e.getSource() == italic){style = style^Font.ITALIC;}font = new Font(fontString, style, size);tArea.setFont(font);} catch (NumberFormatException e1) {//弹了两次！JOptionPane.showMessageDialog(TextFrame.this, ""+sizeString+"不是整数，请输入整数");}}if(e.getSource() instanceof JRadioButton){for (int i = 0; i < colorString.length; i++) {if(e.getSource() == rButton[i]){tArea.setForeground(color[i]);}}}}}