Transfer both Text and Color between JTextField and JTextArea : Drag Drop « Swing « Java Tutorial

import java.awt.Color;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.TransferHandler;
import javax.swing.text.JTextComponent;

public class DnDDemo2 {
  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setContentPane(new JPanel());

    JTextField textField = new JTextField(25);
    textField.setText("Let's swing higher");

    JTextArea textArea = new JTextArea("Demonstrating\ndrag and drop");
    frame.add(new JScrollPane(textArea));

    TextColorTransferHandler transferHandler = new TextColorTransferHandler();

class TextColorTransferHandler extends TransferHandler {

  public int getSourceActions(JComponent c) {
    return COPY_OR_MOVE;

  protected Transferable createTransferable(JComponent component) {
    String text = ((JTextComponent) component).getText();
    Color color = component.getForeground();
    TextColor transferable = new TextColor(text, color);
    return transferable;

  public boolean canImport(JComponent c, DataFlavor[] flavors) {
    return true;

  public boolean importData(JComponent component, Transferable transferable) {
    String colorMimeType = DataFlavor.javaJVMLocalObjectMimeType + ";class=java.awt.Color";
    JTextComponent textComponent = (JTextComponent) component;
    try {
      DataFlavor colorFlavor = new DataFlavor(colorMimeType);
      Color color = (Color) transferable.getTransferData(colorFlavor);
      String text = (String) transferable.getTransferData(DataFlavor.stringFlavor);
    } catch (Exception e) {
    return true;

class TextColor implements Transferable {
  private String text;

  private Color color;

  private DataFlavor[] flavors;

  public TextColor(String text, Color color) {
    String colorMimeType = DataFlavor.javaJVMLocalObjectMimeType + ";class=java.awt.Color";
    DataFlavor colorFlavor = null;
    try {
      colorFlavor = new DataFlavor(colorMimeType);
    } catch (ClassNotFoundException e) {
    flavors = new DataFlavor[2];
    flavors[0] = DataFlavor.stringFlavor;
    flavors[1] = colorFlavor;
    this.text = text;
    this.color = color;

  public DataFlavor[] getTransferDataFlavors() {
    return (DataFlavor[]) flavors.clone();

  public boolean isDataFlavorSupported(DataFlavor flavor) {
    for (int i = 0; i < flavors.length; i++) {
      if (flavor.equals(flavors[i])) {
        return true;
    return false;

  public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
    if (flavor.equals(flavors[0])) {
      return text;
    } else if (flavor.equals(flavors[1])) {
      return color;
    } else {
      throw new UnsupportedFlavorException(flavor);

//Java 6 New Features: A Tutorial
//by Budi Kurniawan 
//Brainy Software Corp. 2006
//Chapter 4 - Networking
//# ISBN-10: 0975212885
//# ISBN-13: 978-0975212882

14.112.Drag Drop
14.112.1.Basic drag and drop
14.112.2.Dragging Text from a JLabelDragging Text from a JLabel
14.112.3.Drag-and-Drop Support for ImagesDrag-and-Drop Support for Images
14.112.4.Drag and drop icons: use an icon property.
14.112.5.implements DragGestureListener, Transferable
14.112.6.Dragging and dropping text between a text area, a list, and a tableDragging and dropping text between a text area, a list, and a table
14.112.7.Drag and drop between JTextArea and JTextField
14.112.8.Transfer both Text and Color between JTextField and JTextArea
14.112.9.Drag and drop between JList and JTextField
14.112.13.Set tree DropMode to DropMode.USE_SELECTION
14.112.14.Set tree drag mode to DropMode.ON
14.112.15.Set tree drag mode to DropMode.INSERT
14.112.16.Set tree drag mode to DropMode.ON_OR_INSERT
14.112.17.Choose Drop Action
14.112.18.Various drop actions
14.112.19.JTable drag and drop
14.112.20.Create a drag source a drop target and a transferable object.
14.112.21.Making a Component Draggable
14.112.22.Detect a drag initiating gesture in your application
14.112.23.Illustrates cut, copy, paste and drag and drop using three instances of JList
14.112.24.Location sensitive drag and drop
14.112.25.Demonstration of the top-level TransferHandler support on JFrame
14.112.26.Drag-and-Drop customization: drag the foreground color from the first label and drop it as the background color into the second one
14.112.27.Demonstrates how to add copy and drag support to a Swing component with TransferHandler
14.112.28.ScribblePane allows individual PolyLine lines to be selected, cut, copied, pasted, dragged, and dropped
14.112.29.Built-in drag and drop support: utilize a TransferHandler class
14.112.30.DND Drag and drop List