SCJP Module-9 Question-30


 

SCJP Module-9 Question-30

The Sample program will test your understanding about the NavigableSet Interface of Collection framework.

The Sample program will test your understanding about the NavigableSet Interface of Collection framework.

Given below the sample code :

1  import java.util.ArrayList;
2  import java.util.List;
3  import java.util.NavigableSet;
4  import java.util.TreeSet;
5  public class Check {
6  public static void main(String... args) {
7  List<Integer> l = new ArrayList<Integer>();
8  lst.add(12);
9  lst.add(6);
10 lst.add(2);
11 lst.add(3);
12 lst.add(30);
13 lst.add(21);
14 NavigableSet<Integer> nset = newTreeSet(l);
15  // Place code here
16  }

What code line should be at line 15 to the print smallest element  grater than 12 in the given array list ?

1. System.out.println( nset.higher(12));

2. System.out.println( nset.lower(12));

3.System.out.println(nset.headSet(12));

4.No need to add any line.

Answer

(1)

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