Java KeyListener for JPane

[robeng]

Hi! I'm trying to make so that my JPane in Java can listen and act upon different key presses. I don't know what I'm missing in my code.

package main;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.Timer;
import java.util.TimerTask;

public class Panel extends javax.swing.JPanel implements KeyListener {

    //Skapandet av spelare och object
    public Spelare p;
    public ArrayList<Vägg> väggar;
    
    public Panel() {
        initComponents();
        gameLoop.schedule(loop, 17, 17);
        p = new Spelare(20, 20, 50);
        väggar = new ArrayList<>(); 
        
    }
   
    
    
    //De olika KeyListenerna
    @Override
    public void keyTyped(KeyEvent e) {
        //Inget
    }
    @Override
    public void keyPressed(KeyEvent e) {
        System.out.println(e.getKeyCode());
    }
    @Override
    public void keyReleased(KeyEvent e) {
        
    }
    
    
    //Main game loop
    Timer gameLoop = new Timer();
    TimerTask loop = new TimerTask(){
        public void run() {
            //Egentliga loop
            
            p.verkställFlyttning();
            
            
            
            repaint();
        }
    };
    
    
    
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        
        p.rita(g);
        
    }
    
    
    


    
    
    
    
    
    
    
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 400, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 300, Short.MAX_VALUE)
        );
    }// </editor-fold>                        


    // Variables declaration - do not modify                     
    // End of variables declaration                   
}

Thanks in advance!

 

[AngusBrown]

You have already implemented the KeyListener Interface, so the last thing to do is to assign it to the JPanel.

What you need to do in the constructor:

addKeyListener(this);

Documentation: https://docs.oracle.com/javase/8/docs/api/java/awt/Component.html#addKeyListener-java.awt.event.KeyListener-