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Errors in SCJP exam

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!!

[761 byte] By [alankilbridea] at [2007-11-27 10:06:39]
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# 1

> 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.

...which is inheritance and which is an is-a relationship.

jverda at 2007-7-13 0:42:59 > top of Java-index,Java Essentials,Training...
# 2
Ahh, so implementing an interface is classed as a form of inheritance eh? I thought they were two different things, that both happened to pass the instanceof test!Thanks for the tip,Wish me luck!!!!Alan K.
alankilbridea at 2007-7-13 0:42:59 > top of Java-index,Java Essentials,Training...
# 3
> Ahh, so implementing an interface is classed as a> form of inheritance eh? Yup. "Implements" and "extends" both ultimately mean "inherits from" or "is a".
jverda at 2007-7-13 0:42:59 > top of Java-index,Java Essentials,Training...
# 4
and if you still didn't know that a day before taking the exam I honestly hope you fail because if you do pass it's a clear indication that the exam is fundamentally flawed and lets people pass that lack even a basic understanding of the language and its background.
jwentinga at 2007-7-13 0:42:59 > top of Java-index,Java Essentials,Training...
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