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8. OOPs
Q: 05 Click the Task button. 
Solution:
class A has name A
class B hasname A Q: 06 Which two statements are true about has-a and is-a relationships? (Choose
two.)
A. Inheritance represents an is-a relationship.
B. Inheritance represents a has-a relationship.
C. Interfaces must be used when creating a has-a relationship.
D. Instance variables can be used when creating a has-a relationship.
Answer: A, D Q: 07 Given:
10: public class Hello {
11: String title;
12: int value;
13: public Hello() {
14: title += " World";
15: }
16: public Hello(int value) {
17: this.value = value;
18: title = "Hello";
19: Hello();
20: }
21: }
and:
30: Hello c = new Hello(5);
31: System.out.println(c.title);
What is the result?
A. Hello
B. Hello World
C. Compilation fails. D. Hello World 5
E. The code runs with no output.
F. An exception is thrown at runtime.
Answer: C Q: 08 Given:
1. class Super {
2. private int a;
3. protected Super(int a) { this.a = a; }
4. }
...
11. class Sub extends Super {
12. public Sub(int a) { super(a); }
13. public Sub() { this.a = 5; }
14. }
Which two, independently, will allow Sub to compile? (Choose two.)
A. Change line 2 to:
public int a;
B. Change line 2 to :protected int a;
C. Change line 13 to :public Sub() { this(5); }
D. Change line 13 to :public Sub() { super(5); }
E. Change line 13 to :public Sub() { super(a); }
Answer: C, D Q: 09 Click the Task button. 
Solution: Car is a Vehicle class A
and < ==================> implements B , C
car is a Collectable { }
Car has a < ==================> class A {
Steering Wheel B b;
} car has Wheels < ==================> class A{
List <B> b;
} Mini is a Car < ==================> class A
extends B{ } Car is an Object < ==================> class A { }
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