SCJP Questions And Answers

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Question No 23
Which will declare a method that forces a subclass to implement it?
A. Public double methoda(); B. Static void methoda (double d1) {} C. Public native double methoda(); D. Abstract public void methoda(); E. Protected void methoda (double d1){}

Answer: D

Question No 24
You want subclasses in any package to have access to members of a superclass. Which is the most
restrictive access modifier that will accomplish this objective?
A. Public
B. Private
C. Protected
D. Transient
E. No access modifier is qualified

Answer: C

Question No 25
Given:
1. abstract class abstrctIt {
2. abstract float getFloat ();
3. )
4. public class AbstractTest extends AbstractIt {
5. private float f1= 1.0f;
6. private float getFloat () {return f1;}
7. }
What is the result?
A. Compilation is successful. B. An error on line 6 causes a runtime failure.