[hardwired]

Code:

import java.awt.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;

public class KBM{
    public static void create (){
        JFrame frame = new JFrame("Button Movement");
        KeyboardPanel keyboardPanel = new KeyboardPanel();
        keyboardPanel.setFocusable(true);
        frame.add(keyboardPanel);
        frame.setSize(600, 600);
        frame.setLocation(100, 100);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    public static void main(String args[]) {
        new KBM().create();
    }
}

class KeyboardPanel extends JPanel implements KeyListener {
    int playerLocationX;
    int playerLocationY;
    Point lastCell = new Point();
    JButton[][] cells = new JButton[7][7];

    public KeyboardPanel(){
        super(new GridLayout(7, 7));
        Random generator = new Random();
        playerLocationX = generator.nextInt((6));
//        playerLocationX++;
//        Random generator2 = new Random();
        playerLocationY = generator.nextInt((6));
//        playerLocationY++;
        lastCell.setLocation(playerLocationX, playerLocationY);
        for(int j = 0; j < cells.length; j++){
            for(int k = 0; k < cells[0].length; k++) {
                cells[j][k] = new JButton();
                add(cells[j][k]);
            }
        }
        setSelection();
        addKeyListener(this);
//        KeyButtonMovement k = new KeyButtonMovement();
//        playerLocationX = k.playerLocationX;
//        playerLocationY = k.playerLocationY;
    }

    public void keyReleased (KeyEvent e){}
    public void keyTyped (KeyEvent e){}

    public void keyPressed (KeyEvent e){
        switch (e.getKeyCode()){
            case KeyEvent.VK_DOWN: 
                if ((playerLocationY +1)!=8){
                    playerLocationY = playerLocationY +1;
                    System.out.println("DOWN "+playerLocationX+
                                       " "+playerLocationY);
                }
                break;
            case KeyEvent.VK_UP: 
                if ((playerLocationY -1)!=0){
                    playerLocationY = playerLocationY -1;
                    System.out.println("UP "+playerLocationX+
                                       " "+playerLocationY);
                }
                break;
            case KeyEvent.VK_LEFT: 
                if ((playerLocationX -1)!=0){
                    playerLocationX = playerLocationX -1;
                    System.out.println("LEFT "+playerLocationX+
                                       " "+playerLocationY);
                }
                break;
            case KeyEvent.VK_RIGHT:
                if ((playerLocationX +1)!=8){ 
                    playerLocationX = playerLocationX +1;
                    System.out.println("RIGHT "+playerLocationX+
                                       " "+playerLocationY);
                }
                break;
//            default: keyChar = e.getKeyChar();
        }
        setSelection();
    }

    private void setSelection() {
        cells[lastCell.x][lastCell.y].setText("");
        cells[lastCell.x][lastCell.y].setBackground(
            UIManager.getColor("Button.background"));
        cells[playerLocationX][playerLocationY].setText("P");
        cells[playerLocationX][playerLocationY].setBackground(Color.YELLOW);
//        cells[playerLocationX][playerLocationY].setForeground(Color.BLACK);
        lastCell.setLocation(playerLocationX, playerLocationY);
    }
}