swing 小应用程序和应用程序.txt

适合初学者练习 包括awt小程序、list和map群体等100多个java程序

Swing 小应用程序和应用程序 List.1 SwingApplet/SwingApplet.java 
Swing 小应用程序和应用程序 List.2 SwingApp/SwingApp.java 
Swing 小应用程序和应用程序 List.3 SwingMenuDemo/SwingMenuDemo.java 
Swing 小应用程序和应用程序 List.4 FlowDemo/FlowDemo.java 
Swing 小应用程序和应用程序 List.5 BorderDemo/BorderDemo.java 
Swing 小应用程序和应用程序 List.6 GridDemo/GridDemo.java 
Swing 小应用程序和应用程序 List.7 GridBagDemo/GridBagDemo.java 
Swing 小应用程序和应用程序 List.8 BoxDemo/BoxDemo.java 

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Swing 小应用程序和应用程序 List.1 SwingApplet/SwingApplet.java 
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001: import javax.swing.*;
002: import java.awt.*;
003: 
004: public class SwingApplet extends JApplet {
005:  public void init() {
006:   JLabel label = 
007:    new JLabel("Simple Java 2 Swing Applet", JLabel.CENTER);
008:   label.setBorder(BorderFactory.createLineBorder(Color.black));
009:   getContentPane().add(label, BorderLayout.CENTER);
010:  }
011: }

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Swing 小应用程序和应用程序 List.2 SwingApp/SwingApp.java 
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001: import javax.swing.*;
002: import java.awt.*;
003: import java.awt.event.*;
004: 
005: public class SwingApp {
006: 
007: // Create application component pane as a JPanel container
008:  public static JPanel createPane() {
009:   JPanel pane = new JPanel();
010:   JLabel label = new JLabel("Simple Swing Application");
011:   pane.setBorder(
012:    BorderFactory.createEmptyBorder(30, 30, 50, 75));
013:   pane.add(label);
014:   return pane;
015:  }
016: 
017:  public static void main(String[] args) {
018:   // Use system look and feel
019:   try {
020:    UIManager.setLookAndFeel(
021:     UIManager.getCrossPlatformLookAndFeelClassName());
022:   } catch (Exception e) { }
023: 
024:   // Create the top-level frame and its components
025:   JFrame frame = new JFrame("Simple Swing Application");
026:   JPanel components = createPane();  // Create components pane
027:   frame.getContentPane().add(components, BorderLayout.CENTER);
028: 
029:   // End program when window closes
030:   frame.addWindowListener(new WindowAdapter() {
031:    public void windowClosing(WindowEvent e) {
032:     System.exit(0);
033:    }
034:   });
035: 
036:   // Engage layout manager and display window
037:   frame.pack();
038:   frame.setVisible(true);
039:  }
040: }

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Swing 小应用程序和应用程序 List.3 SwingMenuDemo/SwingMenuDemo.java 
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001: import javax.swing.*;
002: import java.awt.*;
003: import java.awt.event.*;
004: 
005: public class SwingMenuDemo extends JFrame {
006: 
007: // Constructor does all the setup work
008:  public SwingMenuDemo() {
009:   JMenuBar menuBar;    // Menu bar (contains all menus)
010:   JMenu menu;          // Pulldown menus
011:   JMenuItem menuItem;  // Items inside pulldown menus
012: 
013:   // End program when window closes
014:   addWindowListener(new WindowAdapter() {
015:    public void windowClosing(WindowEvent e) {
016:     System.exit(0);
017:    }
018:   });
019: 
020:   // Create the menu bar, menu, and menu item
021:   menuBar = new JMenuBar();
022:   setJMenuBar(menuBar);
023:   menu = new JMenu("Demo");
024:   menuBar.add(menu);
025:   menuItem = new JMenuItem("Exit");
026:   menu.add(menuItem);
027: 
028:   // Attach listener for the menu item
029:   menuItem.addActionListener(new ActionListener() {
030:    public void actionPerformed(ActionEvent e) {
031:     System.exit(0);
032:    }
033:   });
034:  }
035: 
036:  // Because SwingMenuDemo is a JFrame, main() is much simpler!
037:  public static void main(String[] args) {
038:   SwingMenuDemo app = new SwingMenuDemo();
039:   app.setTitle("Swing Menu Demo");
040:   app.setSize(400, 300);
041:   app.show();
042:  }
043: }

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Swing 小应用程序和应用程序 List.4 FlowDemo/FlowDemo.java 
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001: import javax.swing.*;
002: import java.applet.*;
003: import java.awt.*;
004: 
005: public class FlowDemo extends JApplet {
006:  int alignment;  // Current FlowLayout alignment
007: 
008:  public void init() {
009:   JPanel pane = new JPanel();
010:   alignment = FlowLayout.LEFT;
011: // alignment = FlowLayout.CENTER;
012: // alignment = FlowLayout.RIGHT;
013:   pane.setLayout(new FlowLayout(alignment));
014:   pane.add(new JButton("Button1"));
015:   pane.add(new JButton("Button2"));
016:   pane.add(new JButton("Button3"));
017:   pane.add(new JButton("Button4"));
018:   pane.add(new JButton("Button5"));
019:   getContentPane().add(pane, BorderLayout.CENTER);
020:  }
021: }

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Swing 小应用程序和应用程序 List.5 BorderDemo/BorderDemo.java 
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001: import javax.swing.*;
002: import java.applet.*;
003: import java.awt.*;
004: 
005: public class BorderDemo extends JApplet
006: {
007:  public void init() {
008:   JPanel pane = new JPanel();
009:   pane.setLayout(new BorderLayout());
010:   pane.add("North",  new JButton("North"));
011:   pane.add("South",  new JButton("South"));
012:   pane.add("East",   new JButton("East"));
013:   pane.add("West",   new JButton("West"));
014:   pane.add("Center", new JButton("Center"));
015:   getContentPane().add(pane, BorderLayout.CENTER);
016:  }
017: }

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Swing 小应用程序和应用程序 List.6 GridDemo/GridDemo.java 
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001: import javax.swing.*;
002: import java.applet.*;
003: import java.awt.*;
004: 
005: public class GridDemo extends JApplet {
006: 
007:  public void init() {
008:   JPanel pane = new JPanel();
009:   pane.setLayout(new GridLayout(4, 3, 8, 16));
010:   pane.add(new JButton("    1"));
011:   pane.add(new JButton("ABC 2"));
012:   pane.add(new JButton("DEF 3"));
013:   pane.add(new JButton("GHI 4"));
014:   pane.add(new JButton("JKL 5"));
015:   pane.add(new JButton("MNO 6"));
016:   pane.add(new JButton("PRS 7"));
017:   pane.add(new JButton("TUV 8"));
018:   pane.add(new JButton("WXY 9"));
019:   pane.add(new JButton("  *  "));
020:   pane.add(new JButton("Opr 0"));
021:   pane.add(new JButton("  #  "));
022:   getContentPane().add(pane, BorderLayout.CENTER);
023:  }
024: }

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Swing 小应用程序和应用程序 List.7 GridBagDemo/GridBagDemo.java 
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001: import javax.swing.*;
002: import java.applet.*;
003: import java.awt.*;
004: 
005: public class GridBagDemo extends JApplet {
006: 
007:  protected void makeButton(String name, GridBagLayout gridbag, 
008:   GridBagConstraints c, JPanel pane)
009:  {
010:   JButton button = new JButton(name);
011:   gridbag.setConstraints(button, c);
012:   pane.add(button);
013:  }
014: 
015:  // Initialize applet and GUI buttons
016:  public void init() {
017:   JPanel pane = new JPanel();  // Create content pane
018:   // Create GridBagLayout and Constraints objects
019:   GridBagLayout gridbag = new GridBagLayout();
020:   GridBagConstraints c = new GridBagConstraints();
021:   pane.setLayout(gridbag);  // Tell pane to use gridbag layout
022: 
023:   // Create four "normal" buttons on the top row
024:   c.fill = GridBagConstraints.NONE;
025:   c.weightx = 1.0;
026:   makeButton("Button 1", gridbag, c, pane);
027:   makeButton("Button 2", gridbag, c, pane);
028:   makeButton("Button 3", gridbag, c, pane);
029:   c.gridwidth = GridBagConstraints.REMAINDER; 
030:   makeButton("Button 4", gridbag, c, pane);
031: 
032:   // Create a long button filling entire row
033:   c.fill = GridBagConstraints.BOTH;
034:   c.weightx = 0.0;
035:   makeButton("Button 5", gridbag, c, pane);
036: 
037:   // Create two buttons that fill the row
038:   c.gridwidth = GridBagConstraints.RELATIVE; 
039:   makeButton("Button 6", gridbag, c, pane);
040:   c.gridwidth = GridBagConstraints.REMAINDER;
041:   makeButton("Button 7", gridbag, c, pane);
042: 
043:   // Create a vertical button
044:   c.gridwidth = 1;
045:   c.gridheight = 2;
046:   c.weighty = 1.0;
047:   makeButton("Button 8", gridbag, c, pane);
048:   c.weighty = 0.0;
049: 
050:   // Create buttons to right of vertical Button 8
051:   c.gridwidth = GridBagConstraints.REMAINDER; 
052:   c.gridheight = 1;
053:   makeButton("Button 9", gridbag, c, pane);
054:   makeButton("Button 10", gridbag, c, pane);
055: 
056:   // Add content pane to applet top-level container
057:   getContentPane().add(pane, BorderLayout.CENTER);
058:   setSize(325, 250);
059:  }
060: }

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Swing 小应用程序和应用程序 List.8 BoxDemo/BoxDemo.java 
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001: import javax.swing.*;
002: import java.applet.*;
003: import java.awt.*;
004: 
005: public class BoxDemo extends JApplet
006: {
007:  // Add new button to pane, with center alignment
008:  protected void addButton(String label, JPanel pane) {
009:   JButton button = new JButton(label);
010:   button.setAlignmentX(Component.CENTER_ALIGNMENT);
011:   pane.add(button);
012:  }
013: 
014:  public void init() {
015:   JPanel pane = new JPanel();
016:   pane.setLayout(new BoxLayout(pane, BoxLayout.Y_AXIS));
017:   addButton("Small", pane);
018:   addButton("tiny", pane);
019:   addButton("Really Big Button", pane);
020:   addButton("Bottom Button", pane);
021:   getContentPane().add(pane, BorderLayout.CENTER);
022:  }
023: }

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