BarThread.java Source code

Introduction

Here is the source code for BarThread.java

Source

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;

class BarThread extends Thread {
    private static int DELAY = 500;

    JProgressBar progressBar;

    public BarThread(JProgressBar bar) {
        progressBar = bar;
    }

    public void run() {
        int minimum = progressBar.getMinimum();
        int maximum = progressBar.getMaximum();
        for (int i = minimum; i < maximum; i++) {
            try {
                int value = progressBar.getValue();
                progressBar.setValue(value + 1);

                Thread.sleep(DELAY);
            } catch (InterruptedException ignoredException) {
            }
        }
    }
}

public class Main {
    public static void main(String args[]) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JProgressBar aJProgressBar = new JProgressBar(0, 50);
        aJProgressBar.setStringPainted(true);

        JButton aJButton = new JButton("Start");

        ActionListener actionListener = new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                aJButton.setEnabled(false);
                Thread stepper = new BarThread(aJProgressBar);
                stepper.start();
            }
        };
        aJButton.addActionListener(actionListener);
        frame.add(aJProgressBar, BorderLayout.NORTH);
        frame.add(aJButton, BorderLayout.SOUTH);
        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}