Java : Collection Framework : TreeSet (Size)

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TreeSetExample.java

import java.util.TreeSet;

/*
 * Example of size() method.
 */
public class TreeSetExample
{
    public static void main( String[] args )
    {

        TreeSet<Integer> treeSet = new TreeSet<Integer>();

        treeSet.add(10);
        treeSet.add(50);
        treeSet.add(40);
        treeSet.add(20);
        treeSet.add(30);

        System.out.println("treeSet : " + treeSet + "\n");

        /*
         * Returns the number of elements in this set (its cardinality).
         */
        int size = treeSet.size();

        System.out.println("size : " + size);

    }
}

Output

treeSet : [10, 20, 30, 40, 50]

size : 5

To Download TreeSetDemoSize Project Click the below link
https://sites.google.com/site/javaee4321/java-collections/TreeSetDemoSize.zip?attredirects=0&d=1

See also:

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