swing中的100个小程序例子

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