Built-in drag and drop support: utilize a TransferHandler class
import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.TransferHandler;
public class SimpleDnD {
public static void main(String[] args) {
JTextField field = new JTextField(10);
JButton button = new JButton("Button");
JFrame f = new JFrame();
f.setTitle("Simple Drag & Drop");
f.setLayout(new FlowLayout());
f.add(button);
f.add(field);
field.setDragEnabled(true);
button.setTransferHandler(new TransferHandler("text"));
f.setSize(330, 150);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
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