Thread: help with KeyListener

This is the code that I have written. The goal is that if you hit the arrow keys, the dot will move whichever direction you press. What is happening is that it will draw a dot in the middle of the screen (which is what it is supposed to do), But it will not react to the key presses. What do I need to change?

P.S. I have never done KeyListeners before I only learned this much off of the internet so sorry if I am making a stupid mistake.

import java.awt.*;
import java.awt.event.*;
 
import java.applet.*;
import java.util.*;
import static java.lang.System.*;
 
public class forum_practice extends Applet implements KeyListener,ActionListener{
 
	Image dot; 
	int x = 0;
	int y = 0;
 
	public void init() {
	    dot = getImage(getCodeBase(), "black.gif");
	    x = 100;
	    y = 100;
	}
	public void paint(Graphics g) {
	    g.drawImage(dot, x, y, this);
	}
	public void move(Graphics g,int x,int y){
		g.drawImage(dot,x,y,this);
	}
	public void actionPerformed(ActionEvent e) {
 
	}
	@Override
	public void keyPressed(KeyEvent e) {
		if(e.getKeyCode()==37){
			x-=10;
			move(x,y);
		}
		if(e.getKeyCode()==38){
			y-=10;
			move(x,y);
		}
		if(e.getKeyCode()==39){
			x+=10;
			move(x,y);
		}
		if(e.getKeyCode()==40){
			y+=10;
			move(x,y);
		}
	}
	@Override
	public void keyReleased(KeyEvent e) {
 
	}
	@Override
	public void keyTyped(KeyEvent e) {
		// TODO Auto-generated method stub
 
	}
 
}

Alright so here is my modified code. It now does what I wanted but there is a white flash every time it moves, and you can only see the dot on like every tenth move. How can I make the animation smooth?

import java.awt.*;
import java.awt.event.*;
 
import java.applet.*;
import java.util.*;
import static java.lang.System.*;
 
public class forum_practice extends Applet implements KeyListener{
 
	int x = 0;
	int y = 0;
	byte direction;
	final byte UP = 1;
	final byte RIGHT = 2;
	final byte DOWN = 3;
	final byte LEFT = 4;
 
	public void init() {
	    x = 100;
	    y = 100;
	    addKeyListener(this); 
	}
	public void paint(Graphics g) {
		g.setColor(Color.black);
		g.fillOval(x, y, 10, 10);
		run();
	}
	public void run(){
		try {
			Thread.sleep(100);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
 
		if(direction==UP){
			y-=10;
		}
		if(direction==DOWN){
			y+=10;
		}
		if(direction==LEFT){
			x-=10;
		}
		if(direction==RIGHT){
			x+=10;
		}
 
		repaint();
 
 
	}
	@Override
	public void keyPressed(KeyEvent e) {
		if(e.getKeyCode()==37){
			direction = LEFT;
		}
		if(e.getKeyCode()==38){
			direction = UP;
		}
		if(e.getKeyCode()==39){
			direction = RIGHT;
		}
		if(e.getKeyCode()==40){
			direction = DOWN;
		}
		repaint();
	}
	@Override
	public void keyReleased(KeyEvent e) {
 
	}
	@Override
	public void keyTyped(KeyEvent e) {
		// TODO Auto-generated method stub
 
	}
}