1. Consider the following code: interface Area   Method compute() in class Room should be declared public   Interface definition is incomplete   All of these   Method compute() in interface Area should be declared public   Hint Half-n-half Clue   2. We would like to make a member of a class visible in all subclasses regardless of what package they are in. Which one of the following keywords would achieve this?   private   public   protected   private OR protected   Half-n-half Clue   3. The keywords reserved but not used in the initial version of Java are: (A) union (B) const (C) inner (D) goto (E) boolean (F) synchronized   (C) & (E)   (B),(C) & (D)   (A), (C) & (E)   All of these.   Half-n-half Clue   4. Which keyword can protect a class in a package from accessibility by the classes outside the package?   protected   don't use any keyword at all (make it default)   final   private   Half-n-half Clue   5. The use of protected keyword to a member in a class will restrict its visibility as follows:   Visible only in the class and its subclass in the same package.   Visible only inside the package.   Visible in all classes in the same package and subclasses in other packages.   Visible only in the class where it is declared.   Half-n-half Clue   6. Which of the following are not keywords? (A) NULL (B) implements (C) protected (D) extended (E) string   (D) & (E)   (D)   (C), (D) & (E)   (A), (D) & (E)   Half-n-half Clue   7. Consider the following code: class ClassA   Error. ClassA does not define a no-argument constructor   Error. There is no code in the class ClassB   Error. There is no code in the constructor ClassA(int x)   Error. ClassB does not define a no-argument constructor   Will compile and run successfully   Half-n-half Clue