treeset size 28 29 method in java

1import java.util.TreeSet;
2public class TreeSetSizeMethodExample
3{
4   public static void main(String[] args)
5   {
6      TreeSet<String> ts = new TreeSet<String>();
7      ts.add("watermelon");
8      ts.add("apple");
9      ts.add("banana");
10      ts.add("grapes");
11      ts.add("mango");
12      ts.add("orange");
13      System.out.println("Given TreeSet: " + ts);
14      // print size of TreeSet
15      System.out.println("size of TreeSet is: " + ts.size());
16   }
17}
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