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Certification Practice Tests For PHR, SPHR, GPHR, SCWCD, SCBCD, SCDJWS, SCJP, PMP
CertGear Products - Certification Practice Tests For PHR, SPHR, GPHR, SCWCD, SCBCD, SCDJWS, SCJP, PMPCertGear Products - Certification Practice Tests For PHR, SPHR, GPHR, SCWCD, SCBCD, SCDJWS, SCJP, PMPAbout CertGearCertGear Affiliates ProgramCertGear Technical SupportCertGear Product Downloads - Certification Practice Tests For PHR, SPHR, GPHR, SCWCD, SCBCD, SCDJWS, SCJP, PMP
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 SCJP Certification Practice Test  

Features Of CertGear's SCJP (CX-310-035) Certification Practice Test

  • Learn As You Go - Detailed explanations tell you not just the right answer, but why the right answer is right and the wrong answers are wrong. References for further study are also provided.

  • Customized Options - You decide the way you want to take the testing including:
    Timed, Live scoring, Randomization, Ask Incorrect, Show Answer, Select # of questions.

  • Ask Only The Questions You Got Wrong - This is a great feature. At the end of the exam, instead of being asked every question again, you can tell the test engine to only ask you questions that you got incorrect.

  • Randomization - The tests in our certification mode are dynamic, not fixed like some other practice tests are, so you'll get a new test every time. Each test is timed and the objectives are weighted the same as on the real exam.

  • History - The test engine keeps a history of all the exams and scores you have achieved on those tests. You can easily track your progress and help determine when you are ready to take the actual exam.

  • Categories - Many tests contain categories for you to selectively study topics. Additionally, you can see your grade in each category at the end of the exam.

  • Graphic Scoring - Graphical Breakdown Of Exam Results To Pinpoint Areas To Focus Your Study Effort..

  • Updates - Keep Up-To-Date With The Most Current And Most Accurate Exam Questions / Answers / Explanations With Complimentary Product Updates.

 

Free SCJP Certification Practice Questions:

Consider the following snippet of code: 

	int count=0;
	if (a.hashCode () == b.hashCode ()) count++;
	if (c.equals (d)) count += 2;
	if (e.hashCode () == f.hashCode ()) count+=4;
	if (g.equals (h)) count+=8;
	if (h.equals (i)) count+=16;	
	System.out.println (count);
Assuming that the value printed out is 31, which of the following must be true?

A) (c.hashCode () == d.hashCode ())
B) (b.equals (a))
C) (g.hashCode () == h.hashCode ())
D) (i.hashCode () == g.hashCode ())
E) None of the choices are correct
  • [Ans: A, C, D]

  • In order for the value of 31 to be printed, all of the if-expressions must evaluate to true.

    Based on the Java specifications, if two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result. However, the converse is NOT true.

    Specifically, it is NOT required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. In another words, even if two Objects are NOT equal, they may still generate the same hashCode if desired.


    Based on the Java specifications, the equals () method follows the transitive property. Specifically, if x.equals (y) and y.equals (z), then x.equals (z) must also be true.

    (c.hashCode () == d.hashCode ()) --> must evaluate to true since c.equals (d)

    (b.equals (a))--> NOT necessarily true even though a.hashCode () == b.hashCode () since it is possible to have two different objects return the same hash code.

    (g.hashCode () == h.hashCode ()) --> must evaluate to true since g.equals (h).

    (i.hashCode () == g.hashCode ()) --> must evaluate to true since i.equals (g) due to transitive property of the equals () method.

    References: http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html



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