AbstractSet size() method in Java with Example

The size() method in the AbstractSet class of Java returns the number of elements in the set. This method is inherited from the java.util.Set interface and is implemented in the AbstractSet class.

Syntax:

public int size()

Example:

import java.util.*;

public class SetExample {
   public static void main(String[] args) {
      // Creating a set using HashSet
      Set<String> set = new HashSet<String>();

      // Adding elements to the set
      set.add("apple");
      set.add("banana");
      set.add("orange");

      // Printing the size of the set
      System.out.println("Size of the set: " + set.size());
   }
}

Output:

Size of the set: 3

In the above example, we have created a HashSet and added three elements to it. We have then printed the size of the set using the size() method, which returns the number of elements in the set. The output shows that the size of the set is 3.