【教程】100个Java GUI swing的小程序.rar

      import javax.swing.*;
import javax.swing.border.*;
import javax.swing.text.*;
import javax.swing.event.*;
import java.awt.event.*;
import java.awt.*;
import java.util.*;
import java.io.*;
import java.lang.*;
import javax.swing.undo.*;

public class MainFrame
{ 
    JDesktopPane desktop;
    JFrame topFrame;
    JMenuBar menuBar;
    JPopupMenu popupMenu;
    
    public MainFrame()
    {
        topFrame = new JFrame("MainFrame-Look and Feel");
        topFrame.setBounds(100,100,630,400);  // --- setBounds(x座標,y座標,寬,高)
        buildContent();
        buildMenuBar();
        buildToolBar();
        popupMenu = buildPopupMenu();
        
        topFrame.addWindowListener(new WindowAdapter() {
        	public void windowClosing(WindowEvent e) {
        	  System.exit(0); 
            }
        }); //end of addWindowListener
        
        topFrame.setVisible(true);
    } //end of MainFrame()
    
    public void buildContent()
    {
        desktop = new JDesktopPane();
        topFrame.getContentPane().add(desktop);
    }//end of buildContent()
    
    public void buildMenuBar()
    {
        String menuName;
        
        menuBar = new JMenuBar();
        menuName = "File";
        String[] fileFunctions = {"New", "Open", "Close", "Exit"};
        char[] fileMnemonic = {'N', 'O', 'L', 'X'};
        JMenu mfile = buildMenu(menuName,fileFunctions,fileMnemonic);
        
        menuName = "Edit";
        JMenuItem item;
        JMenu medit = new JMenu(menuName);
        item = medit.add(new ActionSet("Undo",null));
        item.setActionCommand("Undo");
        item.setMnemonic('Z');
        item.setAccelerator( KeyStroke.getKeyStroke('Z',java.awt.Event.CTRL_MASK,false));
        
        item = medit.add(new ActionSet("Redo",null));
        item.setActionCommand("Redo");
        item.setMnemonic('Y');
        item.setAccelerator( KeyStroke.getKeyStroke('Y',java.awt.Event.CTRL_MASK,false));
        
        medit.addSeparator();
        
        Action action = new DefaultEditorKit.CopyAction();
        action.putValue(Action.NAME, "Copy");
        item = medit.add(action);
        item.setMnemonic('T');
        item.setAccelerator( KeyStroke.getKeyStroke('T',java.awt.Event.CTRL_MASK,false));
        
        action = new DefaultEditorKit.CutAction();
        action.putValue(Action.NAME, "Cut");
        item = medit.add(action);
        item.setMnemonic('C');
        item.setAccelerator( KeyStroke.getKeyStroke('C',java.awt.Event.CTRL_MASK,false));
        
        action = new DefaultEditorKit.PasteAction();
        action.putValue(Action.NAME, "Paste");
        item = medit.add(action);
        item.setMnemonic('P');
        item.setAccelerator( KeyStroke.getKeyStroke('P',java.awt.Event.CTRL_MASK,false));
        
        JMenu malign = buildAlignMenu();
        
        menuName = "Insert";
        String[] insertFunctions = {"Picture", "Object"};
        char[] insertMnemonic = null;
        JMenu minsert = buildMenu(menuName,insertFunctions,insertMnemonic);
        
        menuName = "Demo";
        String[] demoFunctions = {"Slider", "Tree Structure", "Table Structure", "Password"};
        char[] demoMnemonic = {'S', 'T', 'A', 'P'};
        JMenu mdemo = buildMenu(menuName,demoFunctions,demoMnemonic);
        
        menuName = "Help";
        String[] helpFunctions = {"About this Program", "Open Help Window"};
        char[] helpMnemonic = {'B', 'H'};     
        JMenu mhelp = buildMenu(menuName,helpFunctions,helpMnemonic);
    
        //設定Hot Key Alt+'?'    
        mfile.setMnemonic('F');
        medit.setMnemonic('E');
        malign.setMnemonic('A');
        minsert.setMnemonic('I'); 
        mdemo.setMnemonic('D');
        mhelp.setMnemonic('H');
        
        menuBar.add(mfile); //將 File 選項加到MenuBar中
        menuBar.add(medit); //將 Edit 選項加到MenuBar中
        menuBar.add(malign); //將 Align 選項加到MenuBar中
        menuBar.add(mdemo); //將 Demo 選項加到MenuBar中    
        menuBar.add(mhelp); //將 Help 選項加到MenuBar中
        
        topFrame.setJMenuBar(menuBar);    
    }//end of buildMenuBar()
    
    public JMenu buildMenu(String menuName, String[] functions, char[] mnemonic)
    {
        ActionSet action;
        JMenuItem item;
        JMenu menu = new JMenu(menuName);
        for (int i=0; i<functions.length; i++)
        {
            item = menu.add(new ActionSet(functions[i],null));
            item.setActionCommand(functions[i]);
            if (mnemonic != null)
            {
                item.setMnemonic(mnemonic[i]);
                item.setAccelerator( KeyStroke.getKeyStroke(mnemonic[i],java.awt.Event.CTRL_MASK,false));
            }
        }
        return menu;
    }//end of buildMenu()
    
    public JMenu buildAlignMenu()
    {
        JRadioButtonMenuItem aL;
        JRadioButtonMenuItem aC;
        JRadioButtonMenuItem aR;
    
        JMenu malign = new JMenu("Align");
        
        aL = new JRadioButtonMenuItem("Align Left");
        aC = new JRadioButtonMenuItem("Align Center");
        aR = new JRadioButtonMenuItem("Align Right");
        
        SimpleAttributeSet attrset = new SimpleAttributeSet();
        aL.addItemListener(new HandleItemEvent("LEFT",attrset));
        aC.addItemListener(new HandleItemEvent("CENTER",attrset));  
        aR.addItemListener(new HandleItemEvent("RIGHT",attrset));
        
        ButtonGroup buttonGroup = new ButtonGroup();
        buttonGroup.add(aL);
        buttonGroup.add(aC);
        buttonGroup.add(aR);
        
        JCheckBoxMenuItem demo1 = new JCheckBoxMenuItem("demo1", true);
        JCheckBoxMenuItem demo2 = new JCheckBoxMenuItem("demo2");
        JCheckBoxMenuItem demo3 = new JCheckBoxMenuItem("demo3");
         
        malign.add(aL);
        malign.add(aC);
        malign.add(aR);
        malign.addSeparator();
        malign.add(demo1);
        malign.add(demo2);
        malign.add(demo3);
        
        return malign;
    }//end of buildAlignMenu()
        
    class HandleItemEvent implements ItemListener
    {
        String align;
        SimpleAttributeSet attrset;
        
        HandleItemEvent(String align, SimpleAttributeSet attrset)
        {
            this.align = align;
            this.attrset = attrset;
        }
        
        public void itemStateChanged(ItemEvent e)
        {
            NewFrame currentFrame = (NewFrame)desktop.getSelectedFrame();
            JTextPane pane = currentFrame.getTextPane();
            StyledDocument docs = pane.getStyledDocument();
            int offset = pane.getSelectionStart();
            int end    = pane.getSelectionEnd();
            int selected_length = end - offset;
            
            if(currentFrame == null) { return;}
            
            if (align.equals("LEFT"))
                StyleConstants.setAlignment(attrset, StyleConstants.ALIGN_LEFT);
            if (align.equals("CENTER"))
                StyleConstants.setAlignment(attrset, StyleConstants.ALIGN_CENTER);
            if (align.equals("RIGHT"))
                StyleConstants.setAlignment(attrset, StyleConstants.ALIGN_RIGHT);
                
            docs.setParagraphAttributes(offset, selected_length, attrset, true);

        }//end of itemStateChanged()
    }//end of HandleItemEvent class
    
    public void buildToolBar()
    {
        JToolBar toolBar = new JToolBar();
        toolBar.setFloatable(true);
        
        String[] newFunctions = {"New"};
        String[] newPics = {"icons/new16.gif"};
        buildToolButton(toolBar,newFunctions,newPics);
        
        toolBar.addSeparator();
        
        String[] editFunctions = {"Cut","Copy","Paste"};
        String[] editPics = {"icons/cut16.gif","icons/copy16.gif","icons/paste16.gif"};
        bu