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import java.util.Set;
import java.util.HashSet;
public class Main {
public static void main(String[] args) {
Set<String> set = new HashSet<>();
set.add("apple");
set.add("banana");
set.add("apple"); // Adding duplicate element
System.out.println("Size of the set: " + set.size());
System.out.println("Elements in the set: " + set);
}
}