1:import javax.swing.*; 2:import javax.swing.event.*; 3:import java.awt.*; 4:import java.awt.event.*; 5:/** 6: This class demonstrates the basics of setting up a Java Swing GUI uisng the 7: BorderLayout. You should be able to use this program to drop in other 8: components when building a GUI 9:*/ 10:public class BasicGui{ 11: // Initialize all swing objects. 12: private JFrame f = new JFrame("Basic GUI"); //create Frame 13: private JPanel pnlNorth = new JPanel(); // North quadrant 14: private JPanel pnlSouth = new JPanel(); // South quadrant 15: private JPanel pnlEast = new JPanel(); // East quadrant 16: private JPanel pnlWest = new JPanel(); // West quadrant 17: private JPanel pnlCenter = new JPanel(); // Center quadrant 18: 19: // Buttons some there is something to put in the panels 20: private JButton btnNorth = new JButton("North"); 21: private JButton btnSouth = new JButton("South"); 22: private JButton btnEast = new JButton("East"); 23: private JButton btnWest = new JButton("West"); 24: private JButton btnCenter = new JButton("Center"); 25: 26: // Menu 27: private JMenuBar mb = new JMenuBar(); // Menubar 28: private JMenu mnuFile = new JMenu("File"); // File Entry on Menu bar 29: private JMenuItem mnuItemQuit = new JMenuItem("Quit"); // Quit sub item 30: private JMenu mnuHelp = new JMenu("Help"); // Help Menu entry 31: private JMenuItem mnuItemAbout = new JMenuItem("About"); // About Entry 32: 33: /** Constructor for the GUI */ 34: public BasicGui(){ 35: // Set menubar 36: f.setJMenuBar(mb); 37: 38: //Build Menus 39: mnuFile.add(mnuItemQuit); // Create Quit line 40: mnuHelp.add(mnuItemAbout); // Create About line 41: mb.add(mnuFile); // Add Menu items to form 42: mb.add(mnuHelp); 43: 44: // Add Buttons 45: pnlNorth.add(btnNorth); 46: pnlSouth.add(btnSouth); 47: pnlEast.add(btnEast); 48: pnlWest.add(btnWest); 49: pnlCenter.add(btnCenter); 50: 51: // Setup Main Frame 52: f.getContentPane().setLayout(new BorderLayout()); 53: f.getContentPane().add(pnlNorth, BorderLayout.NORTH); 54: f.getContentPane().add(pnlSouth, BorderLayout.SOUTH); 55: f.getContentPane().add(pnlEast, BorderLayout.EAST); 56: f.getContentPane().add(pnlWest, BorderLayout.WEST); 57: f.getContentPane().add(pnlCenter, BorderLayout.CENTER); 58: 59: // Allows the Swing App to be closed 60: f.addWindowListener(new ListenCloseWdw()); 61: 62: //Add Menu listener 63: mnuItemQuit.addActionListener(new ListenMenuQuit()); 64: } 65: 66: public class ListenMenuQuit implements ActionListener{ 67: public void actionPerformed(ActionEvent e){ 68: System.exit(0); 69: } 70: } 71: 72: public class ListenCloseWdw extends WindowAdapter{ 73: public void windowClosing(WindowEvent e){ 74: System.exit(0); 75: } 76: } 77: 78: public void launchFrame(){ 79: // Display Frame 80: f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 81: f.pack(); //Adjusts panel to components for display 82: f.setVisible(true); 83: } 84: 85: public static void main(String args[]){ 86: BasicGui gui = new BasicGui(); 87: gui.launchFrame(); 88: } 89:}

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