TreeSet size() Method in Java
The Java.util.TreeSet.size() method is used to get the size of the Tree set or the number of elements present in the Tree set.
Syntax:
Tree_Set.size()
Parameters: The method does not take any parameter.
Return Value: The method returns the size or the number of elements present in the Set.
Below program illustrates the use of Java.util.TreeSet.size() method:
import java.util.*;
import java.util.TreeSet;
public class TreeSetDemo {
public static void main(String args[])
{
TreeSet<String> tree = new TreeSet<String>();
tree.add( "Welcome" );
tree.add( "To" );
tree.add( "Geeks" );
tree.add( "4" );
tree.add( "Geeks" );
tree.add( "TreeSet" );
System.out.println( "TreeSet: " + tree);
System.out.println( "The size of the set is: " + tree.size());
}
}
|
Output:
TreeSet: [4, Geeks, To, TreeSet, Welcome]
The size of the set is: 5
Last Updated :
26 Nov, 2018
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