Как мне заставить это условие сканировать и правильно работать?

Question

Я создаю игру для лаборатории изображений, в которой игрок выбирает другой цвет из сетки 3 на 3 клеток. Когда я вызываю createGrid, он всегда сканирует условие как ложное при установке gameGrid - я могу сказать, потому что весь экран превращается в diffColor, который изменяется переменной сложности. В конце концов, я хочу, чтобы каждый раз в произвольном месте находилась другая ячейка.

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Point;
import java.awt.image.ImageObserver;
import java.util.ArrayList;
import java.util.Collections;

public class EagleEye extends FlexiblePictureExplorer implements ImageObserver {
	private static Picture background = new Picture(900,900);
	private final Picture blank = new Picture(300,300);
	private Picture samePic;
	private Picture diffPic;
	
	public static final boolean DIFFERENT = false;
	public static final boolean SAME = true;
	//settings
	private int gameDimensions = 900;
	private int gridDimensions = 3;
	private int cellDimensions = gameDimensions / gridDimensions;
	private int difficulty = 100;
	
	private final Picture[][] gameGrid = new Picture[gridDimensions][gridDimensions];
	private final boolean[][] statusGrid = new boolean[gridDimensions][gridDimensions];
	
	
	public EagleEye(DigitalPicture Picture) {
		super(background);
		setTitle("Eagle Eye");
		colorSetter();
		createGrid();
		updateImage();
	}
	private void createGrid() {
		//add same cells
		ArrayList<Picture> gameBoard = new ArrayList<>();
		for(int i = 0; i < (gridDimensions*gridDimensions) - 1 ;i++) {
			gameBoard.add(samePic);
		}
		//add in the different cell
		int diffPicRLocation = (int)(Math.random() * gridDimensions);
		gameBoard.add(diffPicRLocation, diffPic);
		for (int x = 0; x < gridDimensions; x++) {
			for (int y = 0; y < gridDimensions; y++) {
				gameGrid[x][y] = gameBoard.remove(0);
				if (gameGrid[x][y] == samePic) {
					gameGrid[x][y] = samePic;
					statusGrid[x][y] = SAME;
				}
				else {
					gameGrid[x][y] = diffPic;
					statusGrid[x][y] = DIFFERENT;
				}
			}
		}
	}
	private void colorSetter() {
		samePic = colorBox(blank);
		diffPic = changeColor(samePic);
	}
	private Picture colorBox(Picture blankp) {
		int r = (int)(Math.random() * 255 + 1);
		int g = (int)(Math.random() * 255 + 1);
		int b = (int)(Math.random() * 255 + 1);
		Pixel[][] pixels = specGetPixels2D(blankp);
		for (Pixel[] rowArray : pixels)
		{
			for (Pixel pixelObj : rowArray)
			{
				pixelObj.setRed(r);
				pixelObj.setGreen(g);
				pixelObj.setBlue(b);
			}
		}
		return blankp;
	}
	private Picture changeColor(Picture blankp) {
		Pixel[][] pixels = specGetPixels2D(blankp);
		for (Pixel[] rowArray : pixels)
		{
			for (Pixel pixelObj : rowArray)
			{
				pixelObj.setRed(difficulty);
				pixelObj.setGreen(difficulty);
				pixelObj.setBlue(difficulty);
			}
		}
		return blankp;
	}
	private Pixel[][] specGetPixels2D(Picture pict) {
		int width = pict.getWidth();
		int height = pict.getHeight();
		Pixel[][] pixelArray = new Pixel[height][width];

		for (int row = 0; row < height; row++) 
			for (int col = 0; col < width; col++) 
				pixelArray[row][col] = new Pixel(pict,col,row);

		return pixelArray;
	}
	private void updateImage() {
		Picture disp = new Picture(gameDimensions, gameDimensions);
		Graphics2D graphics = disp.createGraphics();
		for (int i = 0; i < gridDimensions; i++) {
			for (int j = 0; j < gridDimensions; j++) {
				Picture pict;
				if (statusGrid[i][j] == DIFFERENT) {
					pict = diffPic;
				} else {
					pict = samePic;
				}
				// This is used instead of the copy() method for performance
				// reasons
				graphics.drawImage(pict.getBufferedImage(), cellDimensions * i, cellDimensions * j, this);
			}
		}
		setImage(disp);
		setTitle("EagleEye");
	}
	public void mouseClickedAction(DigitalPicture pict, Pixel pix) {
		
	}
	private void endGame() {
		
	}
	public static void main(String[] args) {
		Picture x = new Picture();
		EagleEye game = new EagleEye(x);
		
	}
}