Using System Clipboard in Java Swing

A System Clipboard is a part of Swing and AWT API  that implements a mechanism to transfer data using cut/copy/paste operations.

With the flowing source code first we set a text into System Clipboard and then register a listener for printing change of the System Clipboard content.

package saeedswing;

import java.awt.Toolkit;

import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.FlavorEvent;
import java.awt.datatransfer.FlavorListener;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.UnsupportedFlavorException;

import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.WindowConstants;

/**
 *
 * @author Saeed Zarinfam
*/
public class NewMain {

    public static void main(String[] args) {
        String someText = "Saeed";
        StringSelection ss = new StringSelection(someText);
        Clipboard systemClipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
        systemClipboard.setContents(ss, null);

        systemClipboard.addFlavorListener(new FlavorListener() {

            public void flavorsChanged(FlavorEvent e) {
                try {
                    Clipboard clipboard = (Clipboard) e.getSource();
                    System.out.println("flavorsChanged : "

                    + clipboard.getContents(null).getTransferData(DataFlavor.stringFlavor));
                } catch (UnsupportedFlavorException ex) {
                    ex.printStackTrace();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
        });

        JFrame jFrame = new JFrame();
        jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        jFrame.setVisible(true);
    }
}


have a nice time.