Given:

What is the output?

• A.Hello world!Bonjour le monde!
• B.Hello world!Hello world!
• C.Bonjour le monde!Hello world!
• D.Bonjour le monde!Bonjour le monde!

Correct Answer: C

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Given:

What is the output?

• A.Message from Abstract Copier: Attempt00
• B.A runtime error is thrown.
• C.Message from Copier: Attempt00
• D.A compilation error is thrown.

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Given:

And the command:
java Main Helloworld
What is the result ?

• A.Input: Echo:
• B.Input: Helloworld Echo: Helloworld
• C.Input:
  Then block until any input comes from System.in.
• D.Input:
  Echo: Helloworld
• E.A NullPointerException is thrown at run time.

Correct Answer: C

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Which declaration of an annotation type is legal?
@interface Author {

• A.String name() default null;
  String date();
  }
  @interface Author {
• B.String name();
  String date;
  }
  @interface Author {
• C.String name() default "";
  String date();
  }
  @interface Author {
• D.String name();
  String date default "";
  }
• E.String name() default "";
  String date();
  }
  @interface Author extends Serializable {

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Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?

• A.The compilation fails because there is no zero args constructor defined in class X.
• B.The compilation fails because either class X or class Y needs to implement the toString() method.
• C.The compilation fails because a final class cannot extend another class.
• D.The compilation succeeds.

Correct Answer: B

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