Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.BorderLayout;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferedImage;
import java.net.URL;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

public class Main {
    public static void main(String[] args) throws Exception {
        JFrame f = new JFrame(Main.class.getSimpleName());
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        BufferedImage bi = ImageIO.read(new URL("http://www.java2s.com/style/download.png"));
        JPanel panel = new JPanel(new BorderLayout());
        JLabel label = new JLabel(new ImageIcon(bi));
        panel.add(label);
        MouseMotionListener doScrollRectToVisible = new MouseMotionAdapter() {
            @Override
            public void mouseDragged(MouseEvent e) {
                Rectangle r = new Rectangle(e.getX(), e.getY(), 1, 1);
                ((JPanel) e.getSource()).scrollRectToVisible(r);
            }
        };
        panel.addMouseMotionListener(doScrollRectToVisible);

        panel.setAutoscrolls(true);
        f.add(new JScrollPane(panel));
        f.pack();
        f.setSize(f.getWidth() / 2, f.getHeight() / 2);
        f.setVisible(true);
    }
}