How can I optimize the performance of an ArrayList in Java?

How can I optimize the performance of an ArrayList in Java?

To optimize an ArrayList, consider the following strategies: 1. Set an initial capacity to avoid resizing. 2. Use primitive types with wrapper classes to reduce overhead. 3. Minimize the number of insertions and deletions.

What do you mean by setting an initial capacity?

Setting an initial capacity means specifying the size of the ArrayList when you create it. This helps avoid multiple resizing operations as elements are added.

How do I set the initial capacity when creating an ArrayList?

You can set the initial capacity by using the constructor: ArrayList<Type> list = new ArrayList<>(initialCapacity); Replace Type with your data type and initialCapacity with the desired size.

Are there any performance differences between ArrayList and LinkedList?

Yes, ArrayList is better for random access and iteration, while LinkedList is more efficient for insertions and deletions.