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DataStructure

list

list

list

Node Details

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Updated5/1/2026

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3 linked nodes

INVOLVESRootCause

while (!(scanner.nextLine().isEmpty())) — loop through a txt file and create a list of recipes. Tension: you are consuming the next line without storing it no where and thus without the chance of accessing it again.

INVOLVESProblem

scanner.nextLine() consumes the next line without storing it, so ingredients cannot be read again

INVOLVESSolution

It is also recommended to declare the local variables in the loop. — while (scanner.hasNextLine()). Tension: As already mentioned in the comments by using `while (!(scanner.nextLine().isEmpty()))` you are consuming the next line without storing it no where. Outcome: List ingredients = new ArrayList<>(); String ingredient = scanner.nextLine(); while (!ingredient.isEmpty() && scanner.hasNextLine()) { ingredients.add(ingredient); ingredient = scanner.nextLine(); }.

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