자바 Swing JprogressBar 사용 코드 및 예제

	import java.awt.BorderLayout;
	import java.awt.Container;
	import java.awt.FlowLayout;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import javax.swing.JButton;
	import javax.swing.JFrame;
	import javax.swing.JLabel;
	import javax.swing.JPanel;
	import javax.swing.JProgressBar;
	public class JProgessBar {
	public static void main(String[] args) {
	new JprogressBar();
	}
	}
	class JprogressBar extends JFrame implements ActionListener, Runnable{
	Container container = getContentPane();
	JLabel label = new JLabel("Progress Bar");
	JButton b1 = new JButton("시작");
	JButton b2 = new JButton("멈춤");
	JPanel panel = new JPanel(); // Button
	JProgressBar progressBar = new JProgressBar(JProgressBar.HORIZONTAL, 0, 100);
	boolean progress = true;
	int num = 0;
	public JprogressBar() {
	setTitle("JProgreeBar");
	setSize(400, 250);
	setLocation(300, 300);
	init();
	start();
	setVisible(true);
	}
	private void init() {
	container.setLayout(new BorderLayout());
	container.add("North", label);
	container.add("Center", progressBar);
	container.add("South", panel);
	panel.setLayout(new FlowLayout(FlowLayout.RIGHT));
	panel.add(b1);
	panel.add(b2);
	// set ProgressBar
	progressBar.setStringPainted(true);
	progressBar.setString("0%");
	}
	private void start() {
	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	b1.addActionListener(this);
	b2.addActionListener(this);
	}
	@Override
	public void actionPerformed(ActionEvent e) {
	if (e.getSource() == b1) {
	progress = true;
	new Thread(this).start();
	b1.setEnabled(false);
	b2.setEnabled(true);
	} else if (e.getSource() == b2) {
	progress = false;
	b1.setEnabled(true);
	b2.setEnabled(false);
	}
	}
	@Override
	public void run() {
	if(num == 100) {
	num = 0;
	}
	for(int i = num; i <= 100; i++) {
	if(!progress) break;
	try {
	Thread.sleep(50);
	} catch (InterruptedException e) {
	e.printStackTrace();
	}
	num = i;
	progressBar.setValue(i);
	progressBar.setString(i + "%");
	}
	b1.setEnabled(true);
	b2.setEnabled(false);
	}
	}

view raw Java Swing JProgressBar.java hosted with ❤ by GitHub

실행결과

container 객체에 JprogressBar 수평 센터 화면구성

쓰레드 활용 동시 구동 함수활용

Swing JprogressBar 의 활용방법

쓰레드에 대해서 이해가 부족한 것 같으니 쓰레드에 대해서 자세하게 알아보도록 하자.