Paste with button

Question

Hi.
I must simulate paste action with a jbutton.
When i click on jbutton i have to paste all in a component like jtextarea.
Can help me with an example?

Answer 1

TextComponents have ActionMaps that have actions for cut/copy/paste. You just need to get the map for the component and get the action for the process you want:
public class TextActionTest extends JFrame {
    private JTextComponent textarea;
    public TextActionTest() {
        buildGUI();
    private void buildGUI() {
        JPanel mainPanel = (JPanel) getContentPane();
        mainPanel.setLayout(new BorderLayout());
        mainPanel.add(buildCenterPanel(), BorderLayout.CENTER);
        mainPanel.add(buildButtonPanel(), BorderLayout.SOUTH);
        pack();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
    private JPanel buildCenterPanel(){
        JPanel retPanel = new JPanel(new GridLayout(1,0,5,5));
        textarea = new JTextArea(4,25);
        Action[] actions = textarea.getActions();
         System.out.println(actions);
        JScrollPane jsp = new JScrollPane(textarea);
        retPanel.add( jsp);
        return retPanel;
    private JPanel buildButtonPanel(){
        JPanel retPanel = new JPanel(new GridLayout(0,3,5,5));
        JButton copyButton = new JButton(textarea.getActionMap().get("copy-to-clipboard"));
        copyButton.setText("Copy");
        JButton cutButton = new JButton(textarea.getActionMap().get("cut-to-clipboard"));
        cutButton.setText("Cut");
        JButton pasteButton = new JButton(textarea.getActionMap().get("paste-from-clipboard"));
        pasteButton.setText("Paste");
        retPanel.add(copyButton);
        retPanel.add(cutButton);
        retPanel.add(pasteButton);
        return retPanel;
    public static void main(String[] args) {
        Runnable runnable = new Runnable() {
            public void run() {
                TextActionTest textActionTest = new TextActionTest();
                textActionTest.setVisible(true);
        SwingUtilities.invokeLater(runnable);
}Cheers
DB