Mega Code Archive
A demonstration of the JProgressBar component
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/*
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly
*/
// SwingProgressBarExample.java
// A demonstration of the JProgressBar component. The component tracks the
// progress of a for loop.
//
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.SwingUtilities;
public class SwingProgressBarExample extends JPanel {
JProgressBar pbar;
static final int MY_MINIMUM = 0;
static final int MY_MAXIMUM = 100;
public SwingProgressBarExample() {
pbar = new JProgressBar();
pbar.setMinimum(MY_MINIMUM);
pbar.setMaximum(MY_MAXIMUM);
add(pbar);
}
public void updateBar(int newValue) {
pbar.setValue(newValue);
}
public static void main(String args[]) {
final SwingProgressBarExample it = new SwingProgressBarExample();
JFrame frame = new JFrame("Progress Bar Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setContentPane(it);
frame.pack();
frame.setVisible(true);
for (int i = MY_MINIMUM; i <= MY_MAXIMUM; i++) {
final int percent = i;
try {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
it.updateBar(percent);
}
});
java.lang.Thread.sleep(100);
} catch (InterruptedException e) {
;
}
}
}
}
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