HashCode and Equals Contract Question from Master Exam Learner Key

[Harpreet Singh janda]

This question is from Master exam.

x = 0;

if( x1.hashCode() != x2.hashCode()) x= x+1;
if( x3.equals(x4) == false) x =x+10;
if( x5.equals(x6) == true) x = x+100;
if( x7.hashCode() == x8.hashCode()) x=x+1000;
System.out.println("x = " + x);

if the output is "x = 1111". Which of the following statements will always be true?

A. x2.equals(x1) == true
B. x3.hashCode()!x4.hashCode()
C. x5.hashCode() == x6.hashCode()
D. x8.equals(x7) == true

And correct answer given is

   x2.equals(x1) == true 

But as per my under standing answer should be

  x5.hashCode() == x6.hashCode()  

Please provide your feedback

[Ankit Garg]

This question has popped up before here, and IMHO, you are right...