Q51
What will be the output of the following Java program? import java.util.*; class Maps public static void main(String args[]) HashMap obj = new HashMap(); obj.put("A", new Integer(1)); obj.put("B", new Integer(2)); obj.put("C", new Integer(3)); System.out.println(obj.keySet());
A.
[A, B, C]
AnswerB.
{A, B, C}
C.
{1, 2, 3}
D.
[1, 2, 3]
Answer: Option A
Solution
Answer: Option A
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