Youtor
Java KeyListener 🚀
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=BJ7fr9XwS2o
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()); • } • }
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