Menu
Home / Java Programming / Declarations and Access Control :: Discussion

Discussion :: Declarations and Access Control

  1. /* Missing statements ? */ public class NewTreeSet extends java.util.TreeSet {     public static void main(String [] args)      {         java.util.TreeSet t = new java.util.TreeSet();         t.clear();     }     public void clear()      {         TreeMap m = new TreeMap();         m.clear();     } }
    which two statements, added independently at beginning of the program, allow the code to compile?
    1. No statement is required
    2. import java.util.*;
    3. import.java.util.Tree*;
    4. import java.util.TreeSet;
    5. import java.util.TreeMap;

    2. A.
    1 only
    B.
    2 and 5
    C.
    3 and 4
    D.
    3 and 5

    View Answer

    Workspace

    View Answer

    Answer : Option B

    Explanation :

    (2) and (5). TreeMap is the only class that must be imported. TreeSet does not need an import statement because it is described with a fully qualified name.

    (1) is incorrect because TreeMap must be imported. (3) is incorrect syntax for an import statement. (4) is incorrect because it will not import TreeMap, which is required.

Write your comments here:

Be The First To Comment