java.awt.datatransfer

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1. Copying Text to Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
StringSelection text = new StringSelection("Hello, world!");
clipboard.setContents(text, null);

2. Retrieving Text from Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable contents = clipboard.getContents(null);
String text = (String) contents.getTransferData(DataFlavor.stringFlavor);

3. Setting an Image to Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
BufferedImage image = new BufferedImage(...);
ImageTransferable imageTransferable = new ImageTransferable(image);
clipboard.setContents(imageTransferable, null);

4. Retrieving an Image from Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable contents = clipboard.getContents(null);
BufferedImage image = (BufferedImage) contents.getTransferData(DataFlavor.imageFlavor);

5. Copying a File to Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
FileTransferable fileTransferable = new FileTransferable(new File("file.txt"));
clipboard.setContents(fileTransferable, null);

6. Retrieving a File from Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable contents = clipboard.getContents(null);
File file = (File) contents.getTransferData(DataFlavor.javaFileListFlavor);

7. Checking Clipboard Contents

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
boolean hasText = clipboard.isDataFlavorAvailable(DataFlavor.stringFlavor);
boolean hasImage = clipboard.isDataFlavorAvailable(DataFlavor.imageFlavor);

8. Copying HTML to Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
HTMLTransferable htmlTransferable = new HTMLTransferable("<h1>Hello, world!</h1>");
clipboard.setContents(htmlTransferable, null);

9. Retrieving HTML from Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable contents = clipboard.getContents(null);
String html = (String) contents.getTransferData(DataFlavor.htmlFlavor);

10. Customizing Data Flavors

DataFlavor customFlavor = new DataFlavor("application/x-my-custom-flavor", "My Custom Flavor");

11. Drag and Drop from Clipboard

JLabel label = new JLabel();
TransferHandler transferHandler = new TransferHandler("text") {
    @Override
    public boolean canImport(TransferSupport support) {
        return support.isDataFlavorSupported(DataFlavor.stringFlavor);
    }
    @Override
    public boolean importData(TransferSupport support) {
        String text = (String) support.getTransferable().getTransferData(DataFlavor.stringFlavor);
        label.setText(text);
        return true;
    }
};
label.setTransferHandler(transferHandler);

12. Drag and Drop to Clipboard

JLabel label = new JLabel("Drag here to copy");
TransferHandler transferHandler = new TransferHandler() {
    @Override
    public boolean canImport(TransferSupport support) {
        return false;
    }
    @Override
    public int getSourceActions(JComponent c) {
        return COPY;
    }
    @Override
    protected Transferable createTransferable(JComponent c) {
        String text = ((JLabel)c).getText();
        return new StringSelection(text);
    }
};
label.setTransferHandler(transferHandler);

13. Copy from Text Editor

JTextArea textEditor = new JTextArea();
textEditor.copy();

14. Paste to Text Editor

JTextArea textEditor = new JTextArea();
textEditor.paste();

15. Cut from Text Editor

JTextArea textEditor = new JTextArea();
textEditor.cut();

16. Copy from Rich Text Editor

JTextPane richTextEditor = new JTextPane();
richTextEditor.copy();

17. Paste to Rich Text Editor

JTextPane richTextEditor = new JTextPane();
richTextEditor.paste();

18. Cut from Rich Text Editor

JTextPane richTextEditor = new JTextPane();
richTextEditor.cut();

19. Copy from JTable

JTable table = new JTable();
table.copy();

20. Paste to JTable

JTable table = new JTable();
table.paste();

21. Cut from JTable

JTable table = new JTable();
table.cut();

22. Copy from JTree

JTree tree = new JTree();
tree.copy();

23. Paste to JTree

JTree tree = new JTree();
tree.paste();

24. Cut from JTree

JTree tree = new JTree();
tree.cut();

25. Copy from JList

JList list = new JList();
list.copy();

26. Paste to JList

JList list = new JList();
list.paste();

27. Cut from JList

JList list = new JList();
list.cut();

28. Copy from JComboBox

JComboBox comboBox = new JComboBox();
comboBox.copy();

29. Paste to JComboBox

JComboBox comboBox = new JComboBox();
comboBox.paste();

30. Cut from JComboBox

JComboBox comboBox = new JComboBox();
comboBox.cut();

31. Copy from Swing Component

Component component = new JPanel();
component.copy();

32. Paste to Swing Component

Component component = new JPanel();
component.paste();

33. Cut from Swing Component

Component component = new JPanel();
component.cut();

34. Copy from System Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable transferable = clipboard.getContents(null);

35. Paste to System Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
clipboard.setContents(transferable, null);

36. Cut from System Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
clipboard.setContents(null, null);

37. Transfer Data Using SwingWorker

SwingWorker<Void, Void> transferWorker = new SwingWorker<>() {
    @Override
    protected Void doInBackground() throws Exception {
        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
        transferable = clipboard.getContents(null);
        return null;
    }
    @Override
    protected void done() {
        // Handle the transfer operation
    }
};
transferWorker.execute();

38. Use Clipboard Owner Manager

ClipboardOwnerManager ownerManager = ClipboardOwnerManager.getClipboardOwnerManager();
ownerManager.setClipboardOwner(new ClipboardOwner() {
    @Override
    public void lostOwnership(Clipboard clipboard, Transferable contents) {
        // Handle clipboard ownership loss
    }
});

39. Suspend Clipboard Notifications

System.setClipboard(null);

40. Restore Clipboard Notifications

Clipboard clipboard = new Clipboard("My App");
System.setClipboard(clipboard);

41. Copy Text from Reader

Reader reader = new FileReader("file.txt");
BufferedReader bufferedReader = new BufferedReader(reader);
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
clipboard.setContents(new StringTransferable(bufferedReader), null);

42. Paste Text to Writer

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable transferable = clipboard.getContents(null);
Writer writer = new FileWriter("file.txt");
BufferedWriter bufferedWriter = new BufferedWriter(writer);
bufferedWriter.write(new String((byte[]) transferable.getTransferData(DataFlavor.stringFlavor)));

43. Copy Text from ByteArrayInputStream

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
ByteArrayInputStream bais = new ByteArrayInputStream("Hello, world!".getBytes());
clipboard.setContents(new ByteArrayTransferable(bais), null);

44. Paste Text to ByteArrayOutputStream

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable transferable = clipboard.getContents(null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
baos.write((byte[]) transferable.getTransferData(DataFlavor.stringFlavor));

45. Copy Image from ByteArrayInputStream

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
BufferedImage image = ImageIO.read(new ByteArrayInputStream(bytes));
ImageTransferable imageTransferable = new ImageTransferable(image);
clipboard.setContents(imageTransferable, null);

46. Paste Image to ByteArrayOutputStream

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable transferable = clipboard.getContents(null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write((Image) transferable.getTransferData(DataFlavor.imageFlavor), "png", baos);

47. Copy File from ByteArrayInputStream

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
FileTransferable fileTransferable = new FileTransferable(bais);
clipboard.setContents(fileTransferable, null);

48. Paste File to ByteArrayOutputStream

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable transferable = clipboard.getContents(null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
baos.write((byte[]) transferable.getTransferData(DataFlavor.bytesFlavor));

49. Copy Text from Clipboard to System.out

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable transferable = clipboard.getContents(null);
String text = (String) transferable.getTransferData(DataFlavor.stringFlavor);
System.out.println(text);

50. Paste Text from System.in to Clipboard

Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String text = reader.readLine();
StringSelection stringSelection = new StringSelection(text);
clipboard.setContents(stringSelection, null);