java swing综合程序

import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.GraphicsEnvironment; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import java.io.File; import java.io.FileInputStream; import java.io.FileWriter; import java.io.IOException; import javax.swing.ButtonGroup; import javax.swing.ImageIcon; import javax.swing.JCheckBox; import javax.swing.JCheckBoxMenuItem; import javax.swing.JComboBox; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JOptionPane; import javax.swing.JRadioButton; import javax.swing.JRadioButtonMenuItem; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JToolBar; import javax.swing.KeyStroke; public class EditorJFrame3 extends JFrame implements ActionListener{ private JComboBox combox_name,combox_size;//字体、字号组合框 private JCheckBox checkb_bold,checkb_italic;//粗体斜体复选框 JCheckBoxMenuItem bold,italic;//粗体、斜体复选菜单项 private JRadioButton radiob_color[];//颜色单选按钮 private JTextArea text; private Color color; private File file; public EditorJFrame3(){ super("文本编辑器");//默认BorderLayout布局 Dimension dim = getToolkit().getScreenSize(); setBounds(dim.width/4,dim.height/4,dim.width/2,dim.height/2); setDefaultCloseOperation(EXIT_ON_CLOSE); text = new JTextAreaMenu("Welcome 欢迎"); add(new JScrollPane(text)); addmyMenu();//菜单栏 addmyJToolbar();//工具栏 setVisible(true); } private void addmyMenu(){//菜单栏部分 JMenuBar menubar = new JMenuBar();//菜单栏 setJMenuBar(menubar); String menustr[] = {"文件","编辑","帮助"}; JMenu menu[]=new JMenu[menustr.length];//菜单 for(int i=0;i<menustr.length;i++){ menu[i] = new JMenu(menustr[i]); menubar.add(menu[i]); } JMenuItem open = new JMenuItem("打开",new ImageIcon("images/open.jpg")); open.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_MASK));//快捷键 menu[0].add(open);//菜单项加入到菜单"文件"里 open.addActionListener(this); JMenuItem save = new JMenuItem("保存",new ImageIcon("images/open.jpg")); menu[0].add(save); save.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_MASK)); save.addActionListener(this); JMenuItem saveas = new JMenuItem("另存为"); saveas.addActionListener(this); menu[0].add(saveas); menu[0].addSeparator();//添加分割线 JMenuItem menuitem_exit = new JMenuItem("退出"); menu[0].add(menuitem_exit); menuitem_exit.addActionListener(this);////////// //注册事件 JMenu menu_style = new JMenu("字形");//菜单 bold = new JCheckBoxMenuItem("粗体"); bold.addActionListener(this); menu_style.add(bold);//复选框菜单项加入到菜单中 italic = new JCheckBoxMenuItem("斜体"); italic.addActionListener(this); menu_style.add(italic); menu[1].add(menu_style); JMenu menu_color = new JMenu("颜色");//菜单 menu[1].add(menu_color); ButtonGroup buttongroup = new ButtonGroup();//按钮组 String colorstr[]={"红","绿","蓝"}; JRadioButtonMenuItem rbmi_color[]=new JRadioButtonMenuItem[colorstr.length];//单选菜单项 for(int i =0;i<colorstr.length;i++){ rbmi_color[i] = new JRadioButtonMenuItem(colorstr[i]); buttongroup.add(rbmi_color[i]);//单选菜单项添加到按钮组中 // menu_color.add(rbmi_color[i]);//单选菜单项添加到菜单中 } JMenuItem author = new JMenuItem("关于作者"); author.addActionListener(this); menu[2].add(author); } private void addmyJToolbar(){//工具栏部分 JToolBar toolbar=new JToolBar(); //创建工具栏，默认水平方向 add(toolbar,"North"); //工具栏添加到框架内容窗格北部 GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment(); String[] fontsName=ge.getAvailableFontFamilyNames(); //获得系统字体 combox_name = new JComboBox(fontsName); //组合框显示系统字体 combox_name.addActionListener(this);////////// //注册事件 toolbar.add(combox_name);//字体组合框加到工具栏里 //设置组合框的宽度260和高度30 combox_name.setMaximumSize(new Dimension(260,30)); String sizestr[]={"20","30","40","50","60","70"}; combox_size = new JComboBox(sizestr); //数组加到字号组合框 //组合框默认不可编辑 combox_size.setEditable(true); //设置组合框可编辑 combox_size.addActionListener(this);////////// //注册事件 combox_size.setMaximumSize(new Dimension(180,30)); toolbar.add(combox_size);//字体组合框加到工具栏里 checkb_bold = new JCheckBox("粗体"); //字形复选框 toolbar.add(checkb_bold); checkb_bold.addActionListener(this);////////// //注册事件 checkb_italic = new JCheckBox("斜体"); toolbar.add(checkb_italic); checkb_italic.addActionListener(this);////////// //注册事件 String colorstr[]={"红","绿","蓝"}; ButtonGroup bgroup_color = new ButtonGroup(); //按钮组 radiob_color = new JRadioButton[colorstr.length];//颜色单选按钮数组 for (int i=0; i<radiob_color.length; i++) { radiob_color[i]=new JRadioButton(colorstr[i]); //颜色单选按钮 radiob_color[i].addActionListener(this);///////////每个单选项均要注册事件 bgroup_color.add(radiob_color[i]); //单选按钮添加到按钮组 toolbar.add(radiob_color[i]); ////////单选按钮添加到工具栏 } //radiob_color[0].setSelected(true); //设置单选按钮的选中状态 } public static void main(String[] args) { new EditorJFrame3(); } @Override public void actionPerformed(ActionEvent e) { if (e.getSource() instanceof JMenuItem) //单击菜单项 { if(e.getActionCommand()=="打开"){ open(); return; } if(e.getActionCommand()=="保存"){ save(); return; } if(e.getActionCommand() == "另存为"){ saveas(); return; } if (e.getActionCommand()=="退出") if (JOptionPane.showConfirmDialog(this, "终止当前程序运行？")==0) System.exit(0); //单击确认对话框中的“是”按钮，结束程序运行 if(e.getActionCommand() == "关于作者"){ AboutAuthor aboutAuthor = new AboutAuthor(); aboutAuthor.setSize(375, 200); aboutAuthor.setLocation(340, 220); aboutAuthor.setVisible(true); } } if (e.getSource() instanceof JRadioButton) //选择一个颜色单选框 { if (e.getSource()==radiob_color[0]) color = new Color(255,0,0); if (e.getSource()==radiob_color[1]) color = new Color(0,255,0); if (e.getSource()==radiob_color[2]) color = new Color(0,0,255); text.setForeground(color); //设置文本区颜色 } if (e.getSource() instanceof JComboBox || e.getSource() instanceof JCheckBox || e.getSource() == bold || e.getSource()==italic) { //组合框、复选框 int size=0; try { String fontname = (String)combox_name.getSelectedItem();//获得字体名 size = Integer.parseInt((String)combox_size.getSelectedItem());//获得字号 if (size<4 || size>120) //字号超出指定范围时，抛出异常对象 throw new Exception("SizeException"); Font font = text.getFont(); //获得文本区的当前字体对象 int style = font.getStyle(); //获得字形 if (e.getSource()==checkb_bold || e.getSource() == bold) //粗体