Java by API/java.awt.datatransfer/TransferHandler

TransferHandler: exportToClipboard(JComponent comp, Clipboard clip, int action)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.Container; import java.awt.Image; import java.awt.datatransfer.Clipboard; import java.awt.datatransfer.DataFlavor; import java.awt.datatransfer.Transferable; import java.awt.datatransfer.UnsupportedFlavorException; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.IOException; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.TransferHandler; public class Main {

 public static void main(String args[]) {
   JFrame frame = new JFrame("Clip Image");
   Container contentPane = frame.getContentPane();
   final Clipboard clipboard = frame.getToolkit().getSystemClipboard();
   Icon icon = new ImageIcon("jaeger.jpg");
   final JLabel label = new JLabel(icon);
   label.setTransferHandler(new ImageSelection());
   JScrollPane pane = new JScrollPane(label);
   contentPane.add(pane, BorderLayout.CENTER);
   JButton copy = new JButton("Copy");
   copy.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent e) {
       TransferHandler handler = label.getTransferHandler();
       handler.exportToClipboard(label, clipboard,
           TransferHandler.COPY);
     }
   });
   JButton clear = new JButton("Clear");
   clear.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent actionEvent) {
       label.setIcon(null);
     }
   });
   JButton paste = new JButton("Paste");
   paste.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent actionEvent) {
       Transferable clipData = clipboard.getContents(clipboard);
       if (clipData != null) {
         if (clipData.isDataFlavorSupported(DataFlavor.imageFlavor)) {
           TransferHandler handler = label.getTransferHandler();
           handler.importData(label, clipData);
         }
       }
     }
   });
   JPanel p = new JPanel();
   p.add(copy);
   p.add(clear);
   p.add(paste);
   contentPane.add(p, BorderLayout.SOUTH);
   frame.setSize(300, 300);
   frame.show();
 }

} class ImageSelection extends TransferHandler implements Transferable {

 private static final DataFlavor flavors[] = { DataFlavor.imageFlavor };
 private JLabel source;
 private Image image;
 public int getSourceActions(JComponent c) {
   return TransferHandler.COPY;
 }
 public boolean canImport(JComponent comp, DataFlavor flavor[]) {
   if (!(comp instanceof JLabel)) {
     return false;
   }
   for (int i = 0, n = flavor.length; i < n; i++) {
     for (int j = 0, m = flavors.length; j < m; j++) {
       if (flavor[i].equals(flavors[j])) {
         return true;
       }
     }
   }
   return false;
 }
 public Transferable createTransferable(JComponent comp) {
   // Clear
   source = null;
   image = null;
   if (comp instanceof JLabel) {
     JLabel label = (JLabel) comp;
     Icon icon = label.getIcon();
     if (icon instanceof ImageIcon) {
       image = ((ImageIcon) icon).getImage();
       source = label;
       return this;
     }
   }
   return null;
 }
 public boolean importData(JComponent comp, Transferable t) {
   if (comp instanceof JLabel) {
     JLabel label = (JLabel) comp;
     if (t.isDataFlavorSupported(flavors[0])) {
       try {
         image = (Image) t.getTransferData(flavors[0]);
         ImageIcon icon = new ImageIcon(image);
         label.setIcon(icon);
         return true;
       } catch (UnsupportedFlavorException ignored) {
       } catch (IOException ignored) {
       }
     }
   }
   return false;
 }
 // Transferable
 public Object getTransferData(DataFlavor flavor) {
   if (isDataFlavorSupported(flavor)) {
     return image;
   }
   return null;
 }
 public DataFlavor[] getTransferDataFlavors() {
   return flavors;
 }
 public boolean isDataFlavorSupported(DataFlavor flavor) {
   return flavor.equals(DataFlavor.imageFlavor);
 }

}

 </source>