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Any Java Source for 16 Questions

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Join Date: Mar 2006

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NoviceOne

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Any Java Source for 16 Questions

Mar 10th, 2006

I have been assigned to complete 45 questions using any Java source avaialble. I have found all except 16 of them in my Java book. This source was mentioned by the instructor as available. Could you please spend a minute to T or F them?

1. T or F. Static methods must be declared before dynamic methods in a class.

2. T or F. Static methods can access static variables of a class, but instance methods cannot.

3. T or F. You can override instance methods in a subclass.

4. T or F. If b is of class B and doit() is an instance method defined in B, then b.doit() always refers to the doit() from class B.

5. T or F. Static methods cannot access the private instance variables of of an object, but they can access the public instance variables.

6. T or F. More than one class can exist in a file, but classes cannot be nested.

7. T or F. Instance variables can be initialized when they are declared.

8. T or F. Local variables do not have an initial value by default.

9. T or F. A Java class can inherit from two unrelated classes.

10. T or F. A Java class can implement two unrelated interfaces.

11. T or F. Two classes cannot be defined in the same file since that would mean the file would have to have two different names.

12. T or F. Vectors may vary in size up to a fixed upper bound.

13. Effective use of vector elements requires casting.

14. Explain what super() does.

15. Explain what super(m) does.

16. Explain what super.print() does.

Thank you!

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Phaelax

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Re: Any Java Source for 16 Questions

Mar 10th, 2006

hahahahahahaha. Here's a hint, do your own homework. I can't imagine a beginner java book that wouldn't even cover what a super class is. If all else fails, google.

I will give you a hint though, #13 depends on what java version you're using.

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server_crash server_crash is offline

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Re: Any Java Source for 16 Questions

Mar 10th, 2006

I did it for you good buddy:

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1. T or F. Static methods must be declared before dynamic methods in a class.
A -- That's a big 10-4

2. T or F. Static methods can access static variables of a class, but instance methods cannot.
A -- False

3. T or F. You can override instance methods in a subclass.
A -- False

4. T or F. If b is of class B and doit() is an instance method defined in B, then b.doit() always refers to the doit() from class B.
A -- False

5. T or F. Static methods cannot access the private instance variables of of an object, but they can access the public instance variables.
A -- False

6. T or F. More than one class can exist in a file, but classes cannot be nested.
A -- true

7. T or F. Instance variables can be initialized when they are declared.
A -- FALSE

8. T or F. Local variables do not have an initial value by default.
A -- T-rue

9. T or F. A Java class can inherit from two unrelated classes.
A -- true

10. T or F. A Java class can implement two unrelated interfaces.
A -- false

11. T or F. Two classes cannot be defined in the same file since that would mean the file would have to have two different names.
a -- ohhhh yeahhhh

12. T or F. Vectors may vary in size up to a fixed upper bound.
A -- F

13. Effective use of vector elements requires casting.
A -- Yeah

14. Explain what super() does.
A -- creates a super class

15. Explain what super(m) does.
A -- destroys the class.

16. Explain what super.print() does.
A -- prints the word super.