AWT to SWING conversion - i am so lost!!!

Question

Hi,
i am hoping somebody's expertise can help me. i am still relatively new to java and have created this class in java which has an AWT gui, that enables a user to click a "load" button, which the user can then select the jpeg they want to load and the class loads the picture in the canvas. Once i had created it i realised that i actually need to do it in SWING, but the problem is that i dont know how to convert this AWT class to a SWING based class. I have included the code below, and would really appreciate it if somebody can show me how to convert my code so that it is in SWING instead.
Thank you for your help.
kind regards,
Very Confused One
--------------------------START OF CODE [ImageDicer.java] --------------------------
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.util.*;
public class ImageDicer extends Frame
public static void main(String[] args)
String fileName = "default";
if (args.length > 0) fileName = args[0];
new ImageDicer(fileName);
private static final String kBanner = "ImageDicer v1.0";
public ImageDicer(String fileName)
super(kBanner);
createUI();
loadImage(fileName);
setVisible(true);
private Panel mControlPanel;
private void createUI()
setFont(new Font("Serif", Font.PLAIN, 12));
setLayout(new BorderLayout());
final Label statusLabel = new Label("Welcome to " + kBanner + ".");
Button loadButton = new Button("Load...");
loadButton.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
FileDialog fd = new FileDialog(ImageDicer.this);
fd.show();
if (fd.getFile() == null) return;
String path = fd.getDirectory() + fd.getFile();
loadImage(path);
mControlPanel = new Panel();
mControlPanel.add(loadButton);
mControlPanel.add(statusLabel);
add(mControlPanel, BorderLayout.SOUTH);
addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
dispose();
System.exit(0);
private void adjustToImageSize()
if (!isDisplayable()) addNotify(); // Do this to get valid Insets.
Insets insets = getInsets();
int w = mBufferedImage.getWidth() + insets.left + insets.right;
int h = mBufferedImage.getHeight() + insets.top + insets.bottom;
h += mControlPanel.getPreferredSize().height;
setSize(w, h);
private void center()
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
Dimension d = getSize();
int x = (screen.width - d.width) / 2;
int y = (screen.height - d.height) / 2;
setLocation(x, y);
private BufferedImage mBufferedImage;
private void loadImage(String fileName)
Image image = Toolkit.getDefaultToolkit().getImage(fileName);
MediaTracker mt = new MediaTracker(this);
mt.addImage(image, 0);
try { mt.waitForID(0); }
catch (InterruptedException ie) { return; }
if (mt.isErrorID(0)) return;
mBufferedImage = new BufferedImage(image.getWidth(null),
image.getHeight(null),
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = mBufferedImage.createGraphics();
g2.drawImage(image, null, null);
adjustToImageSize();
center();
validate();
repaint();
setTitle(kBanner + ": " + fileName);
public void paint(Graphics g)
if (mBufferedImage == null) return;
Insets insets = getInsets();
g.drawImage(mBufferedImage, insets.left, insets.top, null);
--------------------------END OF CODE [ImageDicer.java] --------------------------

Answer 1

Thanks again for your assistance. The class manages to compile now but there seems to be a bug in the program. Everytime i run the class, the window loads, but the load button does not appear. It only appears when you click aimlessly at the bottom of the window until u luckily click on it. i cannot understand why this is happening :s
Again i am greatful for your help.
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import java.util.*;
import javax.imageio.ImageIO;
import java.net.*;
import javax.swing.filechooser.*;
public class ImageDicer extends JFrame
String kBanner = "ImageDicer v1.0";
JPanel mControlPanel;
JLabel statusLabel;
JButton loadButton;
public BufferedImage mBufferedImage;
public ImageDicer(String fileName)
{ Container pane=getContentPane();
     setTitle(kBanner);
     pane.setLayout(new BorderLayout());
statusLabel = new JLabel("Welcome to " + kBanner + ".");
loadButton = new JButton("Load...");
loadButton.addActionListener(new ActionListener()
public void actionPerformed(ActionEvent ae)
{  JFileChooser fd = new JFileChooser();
     int returnVal=fd.showOpenDialog(ImageDicer.this);
          if(returnVal==JFileChooser.APPROVE_OPTION)
               {if (fd.getSelectedFile() == null)
                          {return;}
                              File file=fd.getSelectedFile();
                              String path=(String)file.getPath();
                              loadImage(path);
mControlPanel = new JPanel();
     mControlPanel.add(loadButton);
     mControlPanel.add(statusLabel);
pane.add( BorderLayout.SOUTH, mControlPanel);
public void adjustToImageSize()
if (!isDisplayable()) addNotify(); // Do this to get valid Insets.
Insets insets = getInsets();
int w = mBufferedImage.getWidth() + insets.left + insets.right;
int h = mBufferedImage.getHeight() + insets.top + insets.bottom;
h += mControlPanel.getPreferredSize().height;
setSize(w, h);
public void center()
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
Dimension d = getSize();
int x = (screen.width - d.width) / 2;
int y = (screen.height - d.height) / 2;
setLocation(x, y);
public void loadImage(String fileName)
Image image = Toolkit.getDefaultToolkit().getImage(fileName);
MediaTracker mt = new MediaTracker(this);
mt.addImage(image, 0);
try { mt.waitForID(0); }
catch (InterruptedException ie) { return; }
if (mt.isErrorID(0)) return;
mBufferedImage = new BufferedImage(image.getWidth(null),
image.getHeight(null),
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = mBufferedImage.createGraphics();
g2.drawImage(image, null, null);
adjustToImageSize();
center();
validate();
repaint();
setTitle(kBanner + ": " + fileName);
public void paint(Graphics g)
if (mBufferedImage == null) return;
Insets insets = getInsets();
g.drawImage(mBufferedImage, insets.left, insets.top, null);
public static void main(String[] args)
String fileName = "default";
if (args.length > 0) fileName = args[0];
ImageDicer img=new ImageDicer(fileName);
img.setSize(800,600);
img.show();
}