OpenImage.java

import java.awt.*;
import java.awt.event.*;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.awt.Color;
import java.awt.image.ImageFilter;
import java.awt.Graphics2D;


public class OpenImage extends JFrame implements ActionListener{
    /**
     *
     */


    OpenImageLabel label;
    Container cp;
    File file;
    BufferedImage bi;

    public OpenImage() throws IOException{

        super("Resize and Rotate");

        setDefaultCloseOperation(EXIT_ON_CLOSE);
        JPanel row1 = new JPanel();
        JButton open = new JButton ("Open");
        open.addActionListener(this);
        JButton rotate = new JButton("Rotate");
        rotate.addActionListener(this);
        JButton resize = new JButton("Resize");
        resize.addActionListener(this);
        JButton exit = new JButton ("Exit");
        exit.addActionListener(this);
        row1.add(open);
        row1.add(rotate);
        row1.add(resize);
        row1.add(exit);

        BorderLayout grid1 = new BorderLayout();
        cp = getContentPane();
        cp.setLayout(grid1);

        JPanel topPanel = new JPanel();
        topPanel.setLayout( new BorderLayout() );
        getContentPane().add( topPanel );

        label = new OpenImageLabel();

        JScrollPane scrollPane = new JScrollPane();
        scrollPane.getViewport().add( label );
        topPanel.add( scrollPane, BorderLayout.CENTER );

        JButton save = new JButton("Save");
        JPanel row3 = new JPanel();
        row3.add(save);

        cp.add(BorderLayout.NORTH, row1);
        getContentPane().add( topPanel, BorderLayout.CENTER );
        cp.add(BorderLayout.SOUTH, row3);

        pack();
        setSize(900,700);
        setVisible(true);
    }








    // This method returns a buffered image with the contents of an image

    public void actionPerformed(ActionEvent e) {
        String command = e.getActionCommand();
        if (command == "Exit"){
            System.exit(0);
        }
        if (command == "Open"){
            JFileChooser chooser = new JFileChooser();
            int returnVal = chooser.showOpenDialog(this);
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                file = chooser.getSelectedFile();
                //This is where a real application would open the file.
                label.openFile(file);
                System.out.println("Opening: " + file.getName() + "." + "\n");
              } else {
                System.out.println("Open command cancelled by user." + "\n");
              }
        }
        if(command =="Rotate"){
            //We will rotate image here
            label.rotateImage();
            }
    }

    public static void main(String [] args){
        try {
            // Set System L&F
        UIManager.setLookAndFeel(
            UIManager.getSystemLookAndFeelClassName());
    }
    catch (UnsupportedLookAndFeelException e) {
       // handle exception
    }
    catch (ClassNotFoundException e) {
       // handle exception
    }
    catch (InstantiationException e) {
       // handle exception
    }
    catch (IllegalAccessException e) {
       // handle exception
    }

        try {
            JFrame frame = new OpenImage();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}