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public void eraseBlob(int row, int col){
	if(row >=0 && row < size && col >= 0 && col < size){//size is number of rows and cols in a square 2d array
		if(image[row][col] == 0){
			image[row][col] = 255;
			eraseblob(row - 1, col);
			eraseblob(row + 1, col);
			eraseBlob(row, col + 1);
			eraseBlob(row, col - 1);
		}
	}
}