When should I use ArrayList in Java?

When should I use ArrayList in Java?

You should use ArrayList in Java when you need a resizable array implementation that allows for dynamic array size.

What are the advantages of using ArrayList over arrays?

ArrayLists provide dynamic resizing, easier insertion and deletion, and built-in methods for common operations.

Are there any performance considerations I should be aware of?

Yes, ArrayLists have slower performance for large data sets due to resizing and shifting elements during insertions.

When would it be better to use a LinkedList instead?

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

Can you give me an example of using ArrayList in a Java program?

Sure! Here's a simple example: ArrayList<String> list = new ArrayList<>(); list.add("Hello"); list.add("World");.