1. Which keyword can protect a class in a package from accessibility by the classes outside the package?   protected   private   don't use any keyword at all (make it default)   final   Hint Half-n-half Clue   2. The use of protected keyword to a member in a class will restrict its visibility as follows:   Visible only inside the package.   Visible only in the class and its subclass in the same 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   3. Which of the following are keywords? (A) switch (B) integer (C) default (D) boolean (E) object   (D)   (A) & (C)   (B) & (C)   (E)   Half-n-half Clue   4. A package is a collection of   interfaces   classes   classes and interfaces   editing tools   Half-n-half Clue   5. Which of the following statements about abstract methods/classes in Java are true? 1. An abstract class cannot be instantiated. 2. Constructors cannot be abstract. 3. A subclass of an abstract class must defined the abstract methods. 4. Static methods may be declared abstract.   Line 1, line 2 and line 3 only   Line 1 only   Line 1 and line 2 only   Line 2 only   All are true   Half-n-half Clue   6. Which of the following keywords are used to control access to a class member? (A) default (B) abstract (C) protected (D) interface (E) public   (C) & (E)   (B), (C) & (E)   All of these.   (A), (C) & (E)   Half-n-half Clue   7. Consider the following code: class ClassA   Error. ClassB does not define a no-argument constructor   Error. There is no code in the constructor ClassA(int x)   Error. ClassA does not define a no-argument constructor   Error. There is no code in the class ClassB   Will compile and run successfully   Half-n-half Clue