The size() method of SortedSet interface is used to get the size of the SortedSet or the number of elements present in the SortedSet.
Syntax:
int size()
Parameters: This method does not takes any parameter.
Return Value: The method returns the size or the number of elements present in the SortedSet.
Note: The size() method in SortedSet is inherited from the Set interface in Java.
Below program illustrate the java.util.Set.size() method:
// Java code to illustrate Set.size() method   import java.util.*;   public class SetDemo {     public static void main(String args[])     {           // Creating an empty Set         SortedSet<String> set             = new TreeSet<String>();           // Use add() method to         // add elements into the Set         set.add( "Welcome" );         set.add( "To" );         set.add( "Geeks" );         set.add( "4" );         set.add( "Geeks" );           // Displaying the Set         System.out.println( "Set: " + set);           // Displaying the size of the Set         System.out.println(             "The size of the SortedSet is: "             + set.size());     } } |
Set: [4, Geeks, To, Welcome] The size of the SortedSet is: 4
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Set.html#size()