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Discussion :: Objects and Collections

  1. What will be the output of the program?

     TreeSet map = new TreeSet();
 map.add("one");
 map.add("two");
 map.add("three"); 
 map.add("four");
 map.add("one");  
 Ierator it = map.iterator();
 while (it.hasNext() )
  {    
     System.out.print( it.next() + " " ); 
  }

    2. A.

    one two three four
    B.

    four three two one
    C.

    four one three two
    D.

    one two three four one

    View Answer

    Workspace

    View Answer

    Answer : Option C

    Explanation :

    TreeSet assures no duplicate entries; also, when it is accessed it will return elements in natural order, which typically means alphabetical.

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