QUESTION 7 Given: 3. import java.util.*; 4. public class G1 { 5. public void takeList(List

QUESTION 6 Given: 1. import java.util.*; 2. public class WrappedString { 3. private String s; 4. public WrappedString(String s) { this.s = s; } 5. public static void main(String[] args) { 6. HashSet hs = new HashSet();7. WrappedString ws1 = new WrappedString("aardvark"); 8. WrappedString ws2 = new WrappedString("aardvark"); 9. String s1 = new String("aardvark"); 10. String s2 = new String("aardv..

QUESTION 5 Given: 10. interface Jumper { public void jump(); } ... 20. class Animal {} ... 30. class Dog extends Animal { 31. Tail tail; 32. } ... 40. class Beagle extends Dog implements Jumper{ 41. public void jump() {} 42. } ... 50. class Cat implements Jumper{ 51. public void jump() {} 52. } Which three are true? (Choose three.) A. Cat is-a Animal B. Cat is-a Jumper C. Dog is-a Animal D. Dog ..

QUESTION 4 Given: class Thingy { Meter m = new Meter(); } class Component { void go() { System.out.print("c"); } } class Meter extends Component { void go() { System.out.print("m"); } } 8. class DeluxeThingy extends Thingy { public static void main(String[] args) { DeluxeThingy dt = new DeluxeThingy(); dt.m.go(); Thingy t = new DeluxeThingy(); t.m.go();} } Which two are true? (Choose two.) A. Th..

QUESTION 3 Given: class ClassA {} class ClassB extends ClassA {} class ClassC extends ClassA {} and: ClassA p0 = new ClassA(); ClassB p1 = new ClassB();ClassC p2 = new ClassC(); ClassA p3 = new ClassB(); ClassA p4 = new ClassC(); Which three are valid? (Choose three.) A. p0 = p1; B. p1 = p2; C. p2 = p4; D. p2 = (ClassC)p1; E. p1 = (ClassB)p3; F. p2 = (ClassC)p4; Solution : AEF plus imformation :..

QUESTION 2 Given: 1. class ClassA { 2. public int numberOfInstances; 3. protected ClassA(int numberOfInstances) { 4. this.numberOfInstances = numberOfInstances; 5. } 6. } 7. public class ExtendedA extends ClassA { 8. private ExtendedA(int numberOfInstances) { 9. super(numberOfInstances); 10. } 11. public static void main(String[] args) { 12. ExtendedA ext = new ExtendedA(420); 13. System.out.pri..