013文系の俺と一緒にJavaの勉強しようぜ！_ArrayListとHashMap_2.avi

Java入門編4:配列を作ろう

Java ArrayList - How to use (with video) - Examples Java Code Geeks

JavaのVectorの使い方！ArrayListとの違いやVectorの注意点も解説 | ポテパンスタイル

ArrayList 要素のソートと Comparator - Java 入門

Daniel on Instagram: "ArrayLists stop being confusing the moment you realize they’re not “magic arrays” — they’re a different tool with different rules. This week you learned how lists grow, how .add() and .remove() actually shift data, and why most ArrayList bugs come from ignoring what’s happening under the hood. Once you understand the movement, ArrayLists become predictable — and predictable code is how you stop losing points on FRQs. Follow for more Java clarity, and DM for AP Computer Scie