ProgressMonitor monitors the progress of a user task and pops up a dialog if necessary. It's not a component but a helper class which manages a JProgressBar instance and shows that in a JDialog at the right time.
Example
package com.logicbig.example;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionListener;
import java.util.concurrent.TimeUnit;
public class ProgressMonitorExample {
public static void main(String[] args) {
JFrame frame = createFrame("ProgressMonitor Example");
JButton button = new JButton("start task");
button.addActionListener(createStartTaskActionListener(frame));
frame.add(button, BorderLayout.NORTH);
frame.setVisible(true);
}
private static ActionListener createStartTaskActionListener(Component parent) {
//for progress monitor dialog title
UIManager.put("ProgressMonitor.progressText", "Test Progress");
return (ae) -> {
new Thread(() -> {
//creating ProgressMonitor instance
ProgressMonitor pm = new ProgressMonitor(parent, "Test Task",
"Task starting", 0, 100);
//decide after 100 millis whether to show popup or not
pm.setMillisToDecideToPopup(100);
//after deciding if predicted time is longer than 100 show popup
pm.setMillisToPopup(100);
for (int i = 1; i <= 100; i++) {
//updating ProgressMonitor note
pm.setNote("Task step: " + i);
//updating ProgressMonitor progress
pm.setProgress(i);
try {
//delay for task simulation
TimeUnit.MILLISECONDS.sleep(200);
} catch (InterruptedException e) {
System.err.println(e);
}
}
pm.setNote("Task finished");
}).start();
};
}
public static JFrame createFrame(String title) {
JFrame frame = new JFrame(title);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(new Dimension(800, 700));
return frame;
}
}
