Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.AWTException;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.net.URL;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

public class Main {

    public static BufferedImage getFlippedImage(BufferedImage bi) {
        BufferedImage flipped = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());
        AffineTransform tran = AffineTransform.getTranslateInstance(0, bi.getHeight());
        AffineTransform flip = AffineTransform.getScaleInstance(1d, -1d);
        tran.concatenate(flip);

        Graphics2D g = flipped.createGraphics();
        g.setTransform(tran);
        g.drawImage(bi, 0, 0, null);
        g.dispose();

        return flipped;
    }

    public static void main(String[] args) throws AWTException {
        Runnable r = new Runnable() {
            @Override
            public void run() {
                try {
                    URL url = new URL("http://www.java2s.com/style/download.png");
                    BufferedImage bi = ImageIO.read(url);
                    JPanel gui = new JPanel(new GridLayout(1, 2, 2, 2));

                    gui.add(new JLabel(new ImageIcon(bi)));
                    gui.add(new JLabel(new ImageIcon(getFlippedImage(bi))));

                    JOptionPane.showMessageDialog(null, gui);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        };
        SwingUtilities.invokeLater(r);
    }
}