When should I use an ArrayList in Java?

When should I use an ArrayList in Java?

You should use an ArrayList when you need a resizable array implementation that allows for dynamic addition and removal of elements.

What are the advantages of using ArrayList over arrays?

ArrayLists provide dynamic sizing, easier element manipulation, and built-in methods for common operations, unlike fixed-size arrays.

Are there any performance considerations I should be aware of?

Yes, ArrayLists can be slower than arrays for certain operations, especially when resizing occurs or when accessing elements randomly.

Can I store different types of objects in an ArrayList?

Yes, you can store different types of objects in an ArrayList, but it's recommended to use a common superclass or interface for type safety.

When is it better to use a LinkedList instead?

Use a LinkedList when you need frequent insertions and deletions, as it performs better than ArrayList in those scenarios.