Java KeyListener

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brocode
Published
Java KeyListener keylistener key listener interface GUI swing tutorial for beginners

#Java #KeyListener #keylistener #key #listener #interface #GUI #swing #tutorial #beginners

public class Main{

public static void main(String[] args) {

new MyFrame();
}
}
import java.awt.Color;
import java.awt.event.*;
import javax.swing.*;

public class MyFrame extends JFrame implements KeyListener{


JLabel label;
ImageIcon icon;

MyFrame(){
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setSize(500,500);
this.setLayout(null);
this.addKeyListener(this);

icon = new ImageIcon("rocket.png");

label = new JLabel();
label.setBounds(0, 0, 100, 100);
label.setIcon(icon);
//label.setBackground(Color.red);
//label.setOpaque(true);
this.getContentPane().setBackground(Color.black);
this.add(label);
this.setVisible(true);
}

@Override
public void keyTyped(KeyEvent e) {
//keyTyped = Invoked when a key is typed. Uses KeyChar, char output
switch(e.getKeyChar()) {
case 'a': label.setLocation(label.getX()-10, label.getY());
break;
case 'w': label.setLocation(label.getX(), label.getY()-10);
break;
case 's': label.setLocation(label.getX(), label.getY()+10);
break;
case 'd': label.setLocation(label.getX()+10, label.getY());
break;
}

}

@Override
public void keyPressed(KeyEvent e) {
//keyPressed = Invoked when a physical key is pressed down. Uses KeyCode, int output
switch(e.getKeyCode()) {
case 37: label.setLocation(label.getX()-10, label.getY());
break;
case 38: label.setLocation(label.getX(), label.getY()-10);
break;
case 39: label.setLocation(label.getX()+10, label.getY());
break;
case 40: label.setLocation(label.getX(), label.getY()+10);
break;
}
}

@Override
public void keyReleased(KeyEvent e) {
//keyReleased = called whenever a button is released
System.out.println("You released key char: " + e.getKeyChar());
System.out.println("You released key code: " + e.getKeyCode());
}
}
Category
Bro Code
Tags
Java KeyListener tutorial, Java KeyListener, Java
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