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© 2001 by Tom Swan. All rights reserved.
Updated: 6/4/01 12:20:54 PM
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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: }Return to top
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: }Return to top
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: }Return to top
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: }Return to top
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: }Return to top
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: }Return to top
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: }Return to top
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: }Return to top