FAQ: Learn Java: ArrayLists - Changing a Value

This community-built FAQ covers the “Changing a Value” exercise from the lesson “Learn Java: ArrayLists”.

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This exercise can be found in the following Codecademy content:

Learn Java

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Why does the Array List initialization in the explanation:

ArrayList<String> shoppingCart = new ArrayList<shoppingCart>();

have a different format/template than the one we use in the program we have to modify:

ArrayList<String> sherlocksToDos = new ArrayList<String>();

On the right side of the assignment operator (the right side of the equals sign), inside the brackets we use <String> in our code. Why is the ArrayList object “shoppingCart” written inside of the brackets in the explanation code provided?

1 Like
// Modify sherlocksToDos so that the value at "play violin" becomes "listen to Dr. Watson for amusement"
    
    sherlocksToDos.set(1, "listen to Dr. Watson for amusement");
// Modify poirotsToDos so that the value at "trim mustache" becomes "listen to Captain Hastings for amusement".
    
    poirotsToDos.set(3,"listen to Captain Hastings for amusement");

I think there is a mistake by the course designer.