treemap
import java.util.*;
// Declare the variable using the interface of the object for flexibility.
// Non-primative data types only.
Map<Integer, String> mambo = new TreeMap<Integer, String>();
mambo.put(key, value);
// TreeMap will be sorted by key.
// Work with any comparable object as a key.
mambo.put(1, "Monica");
mambo.put(2, "Erica");
mambo.put(3, "Rita");
import java.util.TreeMap;
public class TreeMapFloorkeyExample
{
public static void main(String[] args)
{
TreeMap<Integer, String> tm = new TreeMap<Integer, String>();
tm.put(60, "apple");
tm.put(10, "banana");
tm.put(50, "cherry");
tm.put(30, "fig");
tm.put(80, "grape");
tm.put(90, "kiwifruit");
// printing values of TreeMap
System.out.println("TreeMap: " + tm);
try
{
// passing null as parameter to floorKey() method
System.out.println(tm.floorKey(null));
}
catch(Exception ex)
{
System.out.println("Exception: " + ex);
}
}
}