Web Reference: The first part of the video covers a notes ArrayList document. The second part covers an activity I go through in class. An ArrayList is a resizable array that can dynamically grow and shrink as elements are added or removed. Unlike arrays, which have a fixed size, ArrayLists can change in size as needed. To create an ArrayList we use: ArrayList variableName = new ArrayList();. It is also import to know ArrayLists can't store primitive types, so we must use Integer for ints and Double for doubles
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