Paste Image to System Clipboard

Question

Hello all...I can't paste an Image to the system clipboard and was wondering if you could help me. Noticed there was some help on this topic with JDK 1.4.1, however I'm using JDK 1.3.1.
I following code was copied from Sun at http://developer.java.sun.com/developer/Books/GJ21AWT/ch20.pdf
but I cant get it to work.
<code>
//implement the class like this
ImageSelection is = new ImageSelection(Constants.DRAWINGSLATE.currentImage.pBitmap[dList.ptr].getImage());
toolkit.getSystemClipboard().setContents(is, null);
class ImageSelection implements ClipboardOwner, Transferable
public static DataFlavor ImageFlavor;
public static DataFlavor ImageArrayFlavor;
private DataFlavor[] flavors = {ImageFlavor, ImageArrayFlavor};
private java.awt.Image image;
private int width, height;
static
try
ImageFlavor = new DataFlavor(Class.forName("java.awt.Image"),"AWT Image");
ImageArrayFlavor = new DataFlavor("image/gif", "GIF Image");
catch(Exception e)
public ImageSelection(Image image)
this.image = image;
public ImageSelection(Image image, int width, int height)
this.image = image;
this.width = width;
this.height = height;
public synchronized DataFlavor[] getTransferDataFlavors()
return flavors;
public boolean isDataFlavorSupported(DataFlavor flavor)
return flavor.equals(ImageFlavor) || flavor.equals(ImageArrayFlavor);
public synchronized Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException
if (flavor.equals(ImageFlavor))
return image;
if (flavor.equals(ImageArrayFlavor))
return imageToArray();
else
throw new UnsupportedFlavorException(flavor);
public void lostOwnership(Clipboard c, Transferable t)
private int[] imageToArray()
int[] pixels = new int[width*height];
PixelGrabber pg = new PixelGrabber(image, 0, 0, width, height, pixels, 0 , width);
try
pg.grabPixels();
catch(InterruptedException e)
e.printStackTrace();
return pixels;
</code>
I get this exception
Couldn't write data flavor java.awt.datatransfer.DataFlavor[representationclass=java.awt.Image;mimetype=application/x-java-serialized-object] to clipboard:
java.io.IOException: Transferable's flavor data is of unexpected class com.apple.mrj.internal.awt.graphics.VImage
Thanks for any help.

Answer 1

I was trying to use ur code with slight modification
import java.awt.*;
import java.awt.datatransfer.*;
import java.io.*;
import java.util.*;
public class Test {
public static void main (String[] parameters) {
          new Test ().test ();
private void test () {
Toolkit.getDefaultToolkit().getSystemClipboard ().setContents (          new mageTransferable ("test.jpg"),
     new ClipboardOwner () {
     public void lostOwnership (                                             Clipboard clipboard,
                         Transferable contents) {}
private class ImageTransferable implements Transferable {
private String fileName;
public ImageTransferable (String fileName) {
System.out.println(" Checking for the File now");
if (! new File(fileName).exists ()) {
throw new IllegalArgumentException ("Can't find image");
System.out.println(" got the file");
this.fileName = fileName;
System.out.println(" returning from constructor");
public Object getTransferData (DataFlavor flavor) throws UnsupportedFlavorException {
System.out.println("trying to get the data to be transfered");
if (! isDataFlavorSupported (flavor)) {
throw new UnsupportedFlavorException (flavor);
System.out.println("This is a supported flavor");
return (Image)Toolkit.getDefaultToolkit().createImage (fileName);
//               System.out.println(
public boolean isDataFlavorSupported (DataFlavor flavor) {
System.out.println("trying to check whether the flavour is supported one");
DataFlavor[] df= this.getTransferDataFlavors();
System.out.println(" data flavors " + df);
boolean result = in(flavor, df);
return result;
public DataFlavor[] getTransferDataFlavors () {
//     "image/x-java-image; class=java.awt.Image"
DataFlavor df=null;
System.out.println("trying to get the data flavours");
df =new DataFlavor("application/x-java-serialized-object; class=java.awt.Image","Image");
//new DataFlavor("image/x-java-image;class=java.awt.Image","Image");
System.out.println(" Just going to return & DF found was"+ df);
DataFlavor[] df2 = new DataFlavor[]{df,DataFlavor.plainTextFlavor,DataFlavor.stringFlavor,DataFlavor.javaFileListFlavor };
System.out.println(df2.length);
System.out.println(df2[0]);
return df2;
private boolean in (DataFlavor flavor, DataFlavor[] flavors) {
System.out.println("Im in in");
int f = 0;
while ((f < flavors.length) && ! flavor.equals (flavors[f])) {
     f ++;
     System.out.println("Im in in's loop");
return f < flavors.length;
But this throws the following exception:
Exception in thread "main" java.lang.ClassCastException: sun.awt.windows.WImage
at sun.awt.windows.WDataTransferer.translateTransferable(WDataTransferer
.java:346)
at sun.awt.DataTransferer.translateTransferable(DataTransferer.java:245)
at sun.awt.windows.WClipboard.setContents(WClipboard.java:69)
at Test.test(Test.java:13)
at Test.main(Test.java:8)
Is the dataflavour purely dependent on OS. What can be done to overcome this problem