When should I use the Java Collection Framework?

When should I use the Java Collection Framework?

The Java Collection Framework is ideal for managing groups of objects. You should use it when you need to store, retrieve, and manipulate data efficiently.

Can you give me examples of when to use specific collections?

Sure! Use ArrayList for dynamic arrays, HashMap for key-value pairs, and HashSet for unique elements.

What are the performance differences between these collections?

ArrayList offers fast random access, HashMap provides average O(1) time complexity for get/put operations, and HashSet ensures O(1) for add/remove.

Are there any drawbacks to using these collections?

Yes, for instance, ArrayList can be slow for large data sets when inserting elements, and HashMap can consume more memory.