example

import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.*;

public class Foo001 {
    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {


                UI frame = null;
                try {
                    frame = new UI();
                } catch (IOException e) {
                    e.printStackTrace();
                    System.exit(-1);
                }
                frame.setTitle("PacMan");
                frame.setResizable(false);
                frame.setSize(1200, 700);
                frame.setMinimumSize(new Dimension(1200, 700));
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.getContentPane().add(frame.PacMan);
                frame.pack();
                frame.setVisible(true);
            }
        });
    }
}

class UI extends JFrame implements KeyListener {
    public PacMan PacMan;

    @Override
    public void keyTyped(KeyEvent e) {

    }

    @Override
    public void keyPressed(KeyEvent e) {

    }

    @Override
    public void keyReleased(KeyEvent e) {
        int key = e.getKeyCode();
        if (key == KeyEvent.VK_RIGHT) {
            PacMan.moveRight();
        }
        if (key == KeyEvent.VK_LEFT) {
            PacMan.moveLeft();
        }
        if (key == KeyEvent.VK_UP) {
            PacMan.moveUp();
        }
        if (key == KeyEvent.VK_DOWN) {
            PacMan.moveDown();
        }
    }

    public UI() throws IOException {
        this.PacMan = new PacMan();
        addKeyListener(this);
        setFocusable(true);
        setFocusTraversalKeysEnabled(false);

    }
}

class PacMan extends JLabel {
    private static final String TIGER_LEFT = "textures/tigerLeft.png";
    private static final String TIGER_RIGHT = "textures/tigerRight.png";
    public int xCoords = 570;
    public int yCoords = 320;
    JLabel pacManImage = new JLabel();
    Icon tigerLeft;
    Icon tigerRight;
//  ImageIcon tigerLeft = new ImageIcon(
//          new ImageIcon("textures/tigerLeft.png").getImage().getScaledInstance(60, 40, Image.SCALE_DEFAULT));
//  ImageIcon tigerRight = new ImageIcon(
//          new ImageIcon("textures/tigerRight.png").getImage().getScaledInstance(60, 40, Image.SCALE_DEFAULT));

    public PacMan() throws IOException {
        File tigerLeftImageFile = new File(TIGER_LEFT);
        File tigerRightImageFile = new File(TIGER_RIGHT);

        BufferedImage tigerLeftImg = ImageIO.read(tigerLeftImageFile);
        BufferedImage tigerRightImg = ImageIO.read(tigerRightImageFile);

        tigerLeft = new ImageIcon(tigerLeftImg);
        tigerRight = new ImageIcon(tigerRightImg);
    }

    public void initialDraw() {
        pacManImage.setIcon(tigerRight);
        pacManImage.setBounds(xCoords, yCoords, 60, 40);
    }

    public void moveRight() {
        pacManImage.setIcon(tigerRight);

        System.out.println("here: " + tigerRight);
        xCoords = xCoords + 2;
        pacManImage.setBounds(xCoords, yCoords, 60, 40);
    }

    public void moveLeft() {
        pacManImage.setIcon(tigerLeft);
        xCoords = xCoords - 2;
        pacManImage.setBounds(xCoords, yCoords, 60, 40);
    }

    public void moveUp() {
        yCoords = yCoords - 2;
        pacManImage.setBounds(xCoords, yCoords, 60, 40);
    }

    public void moveDown() {
        yCoords = yCoords + 2;
        pacManImage.setBounds(xCoords, yCoords, 60, 40);
    }
}