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developer-roadmap/roadmaps/java/content/array-vs-arraylist@a-EQiBUlSgdZba1mW36op.md
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Arik Chakma 274082fd77 feat: clean roadmap content and sync scripts (#10181)
* refactor: clean to roadmap content

* refactor: move shared helpers into scripts/lib
2026-07-28 05:45:17 +06:00

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# Array vs ArrayList
Arrays and ArrayLists are both ways to store collections of elements in Java. An array is a fixed-size, ordered sequence of elements of the same data type. Once you declare its size, you cannot change it. An ArrayList, on the other hand, is a dynamic, resizable array implementation. It can grow or shrink as needed, allowing you to add or remove elements without worrying about the initial size.
Visit the following resources to learn more:
- [@article@Java Arrays](https://jenkov.com/tutorials/java/arrays.html)
- [@article@Java ArrayLists](https://jenkov.com/tutorials/java-collections/list.html)