Given:

What is the result?

• A.True null
• B.True false
• C.Compilation fails
• D.A NullPointerException is thrown at runtime

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Given:
Acc.java:

Which statement is true?

• A.Both p and s are accessible by obj.
• B.p, r, and s are accessible by obj.
• C.Both r and s are accessible by obj.
• D.Only s is accessible by obj.

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Given the definitions of the MyString class and the Test class:

What is the result?

• A.Option B
• B.Option A
• C.Option C
• D.Option D

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Given the definitions of the Bird class and the Peacock class:

and the code fragment:

Which code snippet can be inserted to print Fly.Dance. ?

• A.Peacock b = new Peacock ();Bird p = (Bird) b;
• B.Bird p = new Peacock();
• C.Bird b = new Bird();Peacock p = (Peacock) b;
• D.Bird b = new Peacock ();Peacock p = (Peacock) b;

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Given the following class declarations:
public abstract class Animal public interface Hunter public class Cat extends Animal implements Hunter public class Tiger extends Cat
Which answer fails to compile?
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• A.Option A
• B.Option B
• C.Option C
• D.Option D
• E.Option E

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