1. Consider the following code: interface Area   All of these   Method compute() in class Room should be declared public   Method compute() in interface Area should be declared public   Interface definition is incomplete   Hint Half-n-half Clue   2. Consider the following code: class ClassA   Error. ClassB does not define a no-argument constructor   Error. There is no code in the class ClassB   Will compile and run successfully   Error. ClassA does not define a no-argument constructor   Error. There is no code in the constructor ClassA(int x)   Half-n-half Clue   3. Package p1 contains the following code: package p1; public class Student   Test class is not available.   Class result should be declared public.   Student class is not available.   Result body is not fully defined.   Half-n-half Clue   4. 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 OR protected   protected   public   private   Half-n-half Clue   5. The use of protected keyword to a member in a class will restrict its visibility as follows:   Visible in all classes in the same package and subclasses in other packages.   Visible only in the class and its subclass in the same package.   Visible only inside the package.   Visible only in the class where it is declared.   Half-n-half Clue   6. Which of the following defines a legal abstract class?   class abstract Vehicle {<br>               abstract void display(); }   abstract Vehicle {<br>               abstract void display(); }   class Vehicle {<br>               abstract void display(); }   abstract class Vehicle {<br>               abstract void display(); }   abstract class Vehicle {<br>               abstract void display(); {<br>                 System.out.println("Car"); }}   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   (C) & (E)   All of these.   (B), (C) & (E)   (A), (C) & (E)   Half-n-half Clue