Multiple choice

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"); Iterator it = map.iterator(); while (it.hasNext() ) { System.out.print( it.next() + " " ); }

  1. one two three four

  2. four three two one

  3. four one three two

  4. one two three four one
Reveal answer Fill a bubble to check yourself
C Correct answer
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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