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How can we change the JButton text dynamically in Java?
A JButton is a subclass of AbstractButton and it can be used for adding platform-independent buttons in a Java Swing application. A JButon can generate an ActionListener interface when the user clicking on a button, it can also generate the MouseListener and KeyListener interfaces. By default, we can create a JButton with a text and also can change the text of a JButton by input some text in the text field and click on the button, it will call the actionPerformed() method of ActionListener interface and set an updated text in a button by calling setText(textField.getText()) method of a JButton class.
Example
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class JButtonTextChangeTest extends JFrame {
private JTextField textField;
private JButton button;
public JButtonTextChangeTest() {
setTitle("JButtonTextChange Test");
setLayout(new FlowLayout());
textField = new JTextField(20);
button = new JButton("Initial Button");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
if (!textField.getText().equals(""))
button.setText(textField.getText());
}
});
add(textField);
add(button);
setSize(400, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setVisible(true);
}
public static void main(String[] args) {
new JButtonTextChangeTest();
}
}Output
Updated on: 10-Feb-2020
6K+ Views
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