How do I resize a list in Java?

How do I resize a list in Java?

In Java, you can resize a list by using the ArrayList class. You can add or remove elements, and the list will automatically resize.

Can you show me an example of resizing an ArrayList?

Sure! Here's a simple example:

ArrayList<String> list = new ArrayList<>();
list.add("Apple");
list.add("Banana");
list.remove(0); // Removes "Apple"
System.out.println(list); // Output: [Banana]

What happens if I try to access an index that doesn't exist?

If you try to access an index that doesn't exist, you'll get an IndexOutOfBoundsException. Always check the size of the list before accessing an index.

Are there any performance considerations when resizing lists?

Yes, resizing an ArrayList can be costly if it needs to grow beyond its current capacity, as it may need to copy elements to a new array.