Key listener java

package com.javapointers.javase;
 
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
 
public class KeyListenerTest implements KeyListener, ActionListener {
 
    JFrame frame;
    JTextField tf;
    JLabel lbl;
    JButton btn;
 
    public KeyListenerTest() {
        frame = new JFrame();
        lbl = new JLabel();
        tf = new JTextField(15);
        tf.addKeyListener(this);
        btn = new JButton("Clear");
        btn.addActionListener(this);
        JPanel panel = new JPanel();
        panel.add(tf);
        panel.add(btn);
 
        frame.setLayout(new BorderLayout());
        frame.add(lbl, BorderLayout.NORTH);
        frame.add(panel, BorderLayout.SOUTH);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 100);
        frame.setVisible(true);
    }
 
    @Override
    public void keyTyped(KeyEvent ke) {
        lbl.setText("You have typed "+ke.getKeyChar());
    }
 
    @Override
    public void keyPressed(KeyEvent ke) {
        lbl.setText("You have pressed "+ke.getKeyChar());
    }
 
    @Override
    public void keyReleased(KeyEvent ke) {
        lbl.setText("You have released "+ke.getKeyChar());
    }
 
    @Override
    public void actionPerformed(ActionEvent ae) {
        tf.setText("");
    }
 
    public static void main(String args[]) {
        new KeyListenerTest();
    } 
}

Source: javapointers.com

Similar codes

6 votes171 views1 answer
How to select a random element from an array in java
Java
0 vote181 views1 answer
Exoplayer how to put loader while video is still loading android java
Java
0 vote137 views1 answer
How to sort 2d array in java using stream api
Java
0 vote177 views1 answer
Quick sort in java progrmmieren
Java
0 vote166 views1 answer
Java stdin
Java
11 votes168 views2 answers
Java sleep in code
Java
0 vote191 views1 answer
Problem solving using recursion in java
Java
1 vote183 views2 answers
Java responseentity
Java
1 vote183 views2 answers
Spigot heal player
Java
0 vote223 views1 answer
Spring-boot java header appliacation/json constant
Java Spring