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How can we implement cut, copy and paste functionality of JTextField in Java?
A JTextField is a subclass of JTextComponent class that allows the editing of a single line of text. We can implement the functionality of cut, copy and paste in a JTextField component by using cut(), copy() and paste() methods. These are pre-defined methods in a JTextFeild class.
Syntax
public void cut() public void copy() public void paste()
Example
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class JTextFieldCutCopyPasteTest extends JFrame {
private JTextField textField;
private JButton cutButton, copyButton, pasteButton;
public JTextFieldCutCopyPasteTest() {
setTitle("JTextField CutCopyPaste Test");
setLayout(new FlowLayout());
textField = new JTextField(12);
cutButton = new JButton("Cut");
pasteButton = new JButton("Paste");
copyButton = new JButton("Copy");
cutButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
textField.cut();
}
});
copyButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
textField.copy();
}
});
pasteButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent le) {
textField.paste();
}
});
textField.addCaretListener(new CaretListener() {
public void caretUpdate(CaretEvent ce) {
System.out.println("All text: " + textField.getText());
if (textField.getSelectedText() != null)
System.out.println("Selected text: " + textField.getSelectedText());
else
System.out.println("Selected text: ");
}
});
add(textField);
add(cutButton);
add(copyButton);
add(pasteButton);
setSize(375, 250);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setLocationRelativeTo(null);
setVisible(true);
}
public static void main(String args[]) {
new JTextFieldCutCopyPasteTest();
}
}Output
Updated on: 10-Feb-2020
1K+ Views
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