How do I compare two sets in Java?

How do I compare two sets in Java?

You can compare two sets in Java using methods like equals() to check if they are equal or retainAll() to find common elements.

What if I want to find the difference between two sets?

You can use the removeAll() method to get the difference between two sets. For example, set1.removeAll(set2) will modify set1 to contain only elements not in set2.

Can I check if one set is a subset of another?

Yes, you can use the containsAll() method to check if one set is a subset of another. For example, set1.containsAll(set2) returns true if set2 is a subset of set1.

Are there any performance considerations when comparing large sets?

Yes, performance can vary based on the implementation of the set. HashSet generally offers faster performance for operations like add, remove, and contains compared to TreeSet.