Focus Concepts Demo
/* From http://java.sun.com/docs/books/tutorial/index.html */
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import java.awt.BorderLayout;
import java.awt.GridLayout;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
/*
* FocusConceptsDemo.java is a 1.4 example that requires no other files.
*/
public class FocusConceptsDemo extends JPanel {
static JFrame frame;
JTextField t1, t2, t3, t4;
JButton b1, b2, b3, b4;
JTextArea text1;
public FocusConceptsDemo() {
super(new BorderLayout());
b1 = new JButton("JButton");
b2 = new JButton("JButton");
b3 = new JButton("JButton");
b4 = new JButton("JButton");
JPanel buttonPanel = new JPanel(new GridLayout(1, 1));
buttonPanel.add(b1);
buttonPanel.add(b2);
buttonPanel.add(b3);
buttonPanel.add(b4);
text1 = new JTextArea("JTextArea", 15, 40);
JPanel textAreaPanel = new JPanel(new BorderLayout());
textAreaPanel.add(text1, BorderLayout.CENTER);
t1 = new JTextField("JTextField");
t2 = new JTextField("JTextField");
t3 = new JTextField("JTextField");
t4 = new JTextField("JTextField");
JPanel textFieldPanel = new JPanel(new GridLayout(1, 1));
textFieldPanel.add(t1);
textFieldPanel.add(t2);
textFieldPanel.add(t3);
textFieldPanel.add(t4);
add(buttonPanel, BorderLayout.PAGE_START);
add(textAreaPanel, BorderLayout.CENTER);
add(textFieldPanel, BorderLayout.PAGE_END);
setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event-dispatching thread.
*/
private static void createAndShowGUI() {
//Make sure we have nice window decorations.
JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
frame = new JFrame("FocusConceptsDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
JComponent newContentPane = new FocusConceptsDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
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