Java tutorial
import java.util.TreeSet; public class Main { public static void main(String[] args) { TreeSet<Integer> treeadd = new TreeSet<Integer>(); treeadd.add(12); treeadd.add(11); treeadd.add(16); treeadd.add(15); // getting the floor value for 13 System.out.println("Floor value for 13: " + treeadd.floor(13)); } }