How do I check if a set contains an element in Java?

How do I check if a set contains an element in Java?

You can use the contains() method of the Set interface. For example, mySet.contains(element).

Can you show me a code example?

Sure! Here's a simple example:

import java.util.HashSet;

public class Main {
    public static void main(String[] args) {
        HashSet<String> mySet = new HashSet<>();
        mySet.add("apple");
        mySet.add("banana");

        System.out.println(mySet.contains("apple")); // true
        System.out.println(mySet.contains("orange")); // false
    }
}

What if I want to check for multiple elements?

You can loop through the elements you want to check and use the contains() method for each one. Would you like an example?