treemap higherkey 28 29 method in java

1import java.util.TreeMap;
2public class TreeMapHigherKeyMethodExample
3{
4   public static void main(String[] args)
5   {
6      try
7      {
8         TreeMap<Integer, String> tm = new TreeMap<Integer, String>();
9         tm.put(6, "green");
10         tm.put(3, "violet");
11         tm.put(2, "red");
12         tm.put(8, "yellow");
13         tm.put(5, "blue");
14         System.out.println("Given TreeMap: " + tm);
15         // getting higher key value for 5 using higherKey() method
16         int value = tm.higherKey(5);
17         System.out.println("The higherKey value for 5: " + value);
18      }
19      catch(NullPointerException ex)
20      {
21         System.out.println("Exception: " + ex);
22      }
23   }
24}

1Let’s see example on TreeMap higherKey(K key) method for NullPointerException
2import java.util.TreeMap;
3public class TreeMapHigherKeyMethodExample
4{
5   public static void main(String[] args)
6   {
7      try
8      {
9         TreeMap<Integer, String> tm = new TreeMap<Integer, String>();
10         tm.put(6, "green");
11         tm.put(3, "violet");
12         tm.put(2, "red");
13         tm.put(8, "yellow");
14         tm.put(5, "blue");
15         System.out.println("Given TreeMap: " + tm);
16         // getting higher key value for null using higherKey() method
17         System.out.println("The higherKey value for null: ");
18         int value = tm.higherKey(null);
19         System.out.println("Value is: " + value);
20      }
21      catch(NullPointerException ex)
22      {
23         System.out.println("Exception: " + ex);
24      }
25   }
26}