Errors in SCJP exam

Question

Hi,
I am sitting my SCJP 1.5 exam tomorrow and just going through the Sun sample exam that I bought on-line from Sun.
In the first exam (you get 3), question 50 states that...
Is-a relationships must use inheritance
However, the instanceof test will also return true for an implementation of an Interface. Am I wrong or is this a mistake in the exam papers? I searched through the forum and this doesn't seem to be the first such error, which leads me to question if the sample papers are incorrect, is there any way of knowing if there are any mistakes in the actual exam?
Thanks!
Alan K.
Ps: The sample exams cost nearly twice the price from the European based website than the USA website.... not impressed!!

Answer 1

At the risk of suffering the ridicule of JWenting, here are 3 other - shameful - mistakes that I noticed on the 3rd practice exam:
Question 27 has BufferWriter 3 times instead of BufferedWriter. For all of the idiotic 'gotcha' questions that the exam throws at you - and considering that Sun charges $75 for these practice exams, this should have been caught.
Question 29 is even worse:
Given:
1. class Dog implements Serializable {
2.   Collar c = new Collar();
3. }
4. class Collar implements Serializable {
5.   CollarPart cp1 = new CollarPart("handle");
6.   CollarPart cp2 = new CollarPart("clip");
7. }
8.
9. class CollarPart implements Serializable { }When an instance of Dog is serialized, how many objects are serialized?
My thoughts: Although they claim 4 should be serialzied, the answer should be Zero, because the code won't compile. You can't serialize a Dog instance, because you can't serialize a Collar instance, because cp1 and cp2 are instantiated with a non-existent constructor.
And, by far the worst of all is Question 58:
1. import java.util.*;
2. class DumpArray {
3.   public static void main(String [] args) {
4.     int [] a = {7,9,8};
5.     int [][] aa = {{1,2,3}, {6,5,4}};
6.     int [][][] aaa = {{{1,2}, {3,4}}, {{5,6},{7,8}}};
7.
8.     System.out.println(Arrays.deepToString(a));
9.     System.out.println(Arrays.deepToString(aa));
10.     System.out.println(Arrays.deepToString(aaa));
11.   }
12. }Which invocation (or invocations) of deepToString will compile?
My thoughts: The answer claims that only lines 9 and 10 will compile b/c deepToString can be used only with multidimensional arrays. Wrong!!! There's no way to sugarcoat it- that is just totally wrong.
So, does the real test have problems like this? I'm annoyed.