关于java里面的keypressed没反应

麻烦问一下，为什么我的这个代码，keypressed运行的时候，按键上下左右没反应呢。
package gremlins;

import processing.core.PApplet;
import processing.core.PImage;
import processing.data.JSONObject;
import processing.data.JSONArray;

import java.util.Random;

import com.jogamp.newt.event.KeyEvent;
import com.jogamp.newt.event.KeyListener;

import java.io.*;

public class App extends PApplet implements KeyListener {

public static final int WIDTH = 720;
public static final int HEIGHT = 720;
public static final int SPRITESIZE = 20;
public static final int BOTTOMBAR = 60;

public static final int FPS = 60;

public static final Random randomGenerator = new Random();

public String configPath;

public PImage brickwall;
public PImage stonewall;

private Wizard wizard;

public App() {
    this.configPath = "config.json";
}

/**
 * Initialise the setting of the window size.
*/
public void settings() {
    size(WIDTH, HEIGHT);
}

/**
 * Load all resources such as images. Initialise the elements such as the player, enemies and map elements.
*/
public void setup() {
    frameRate(FPS);

    // Load images during setup
    this.stonewall = loadImage(this.getClass().getResource("stonewall.png").getPath().replace("%20", " "));
    this.brickwall = loadImage(this.getClass().getResource("brickwall.png").getPath().replace("%20", " "));
    //this.gremlin = loadImage(this.getClass().getResource("gremlin.png").getPath().replace("%20", " "));
    //this.slime = loadImage(this.getClass().getResource("slime.png").getPath().replace("%20", " "));
    //this.fireball = loadImage(this.getClass().getResource("fireball.png").getPath().replace("%20", " "));
    

    JSONObject conf = loadJSONObject(new File(this.configPath));

    this.wizard = new Wizard(30, 200, this.loadImage("src/main/resources/gremlins/wizard2.png"));


}

/**
 * Receive key pressed signal from the keyboard.
*/
@Override
public void keyPressed(KeyEvent e){
    int key = e.getKeyCode();
    if (key == KeyEvent.VK_UP){
        System.out.println("this is up");
    }else if (key == KeyEvent.VK_DOWN){
        this.wizard.moveDOWN();
    }else if (key == KeyEvent.VK_LEFT){
        this.wizard.moveLEFT();
    }else if (key == KeyEvent.VK_RIGHT){
        this.wizard.moveRIFHT();
    }

}

public void keyTyped(KeyEvent e){

}


/**
 * Receive key released signal from the keyboard.
*/
@Override
public void keyReleased(KeyEvent e){

}


/**
 * Draw all elements in the game by current frame. 
 */
public void draw() {
    this.wizard.tick();

    this.rect(-1, -1, WIDTH + 2, HEIGHT + 2);
    this.wizard.draw(this);
}

public static void main(String[] args) {
    PApplet.main("gremlins.App");
}

}

下面是我的wizard里面的代码
package gremlins;

import processing.core.PImage;
import processing.core.PApplet;

public class Wizard {
private int x;
private int y;

private int yVel;
private int xVel;

private PImage wizard;

public Wizard(int x, int y, PImage wizard){
    this.x = x;
    this.y = y;
    this.xVel = 0;
    this.yVel = 0;
    this.wizard = wizard;
}

public void tick(){
    //Handles logic
    this.y += this.yVel;
    this.x += this.xVel;
    this.yVel = 0;
    this.xVel = 0;
}

public void draw(PApplet app){
    // Handling graphics
    app.image(this.wizard, this.x, this.y);
}

public void moveUP(){
    this.yVel = -10;  
}

public void moveDOWN(){
    this.yVel = 10;
}

public void moveLEFT(){
    this.xVel = -10;
}
 public void moveRIFHT(){
    this.xVel = 10;
 }

}