What is the memory usage of sets in Java?

What is the memory usage of sets in Java?

In Java, the memory usage of sets can vary based on the implementation. For example, HashSet uses a hash table and has an initial capacity and load factor that affect memory consumption.

How does the load factor affect memory usage?

The load factor determines how full the hash table can get before it needs to resize. A higher load factor means less memory usage but can lead to more collisions and slower performance.

What are the differences between HashSet and TreeSet in terms of memory?

HashSet generally uses less memory than TreeSet because TreeSet maintains a balanced tree structure, which requires additional overhead for storing pointers.

Can you give me an example of when to use each type of set?

Use HashSet when you need fast access and don't care about order. Use TreeSet when you need sorted elements and can afford the extra memory.