1. 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   Hint Half-n-half Clue   2. 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   All of these.   (B),(C) & (D)   (C) & (E)   (A), (C) & (E)   Half-n-half Clue   3. Which of the following are keywords? (A) switch (B) integer (C) default (D) boolean (E) object   (E)   (B) & (C)   (A) & (C)   (D)   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)   private   final   Half-n-half Clue   5. 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?   protected   private OR protected   public   private   Half-n-half Clue   6. Package p1 contains the following code: package p1; public class Student   Class result should be declared public.   Result body is not fully defined.   Student class is not available.   Test class is not available.   Half-n-half Clue   7. Which of the following keywords are used to control access to a class member? (A) default (B) abstract (C) protected (D) interface (E) public   (A), (C) & (E)   All of these.   (B), (C) & (E)   (C) & (E)   Half-n-half Clue