【正文】 ){} 9. } What statement is true? A. The code will pile without changes. B. The code will pile if public Tree(){Plant()。 3. public Plant(String name){ = name。 26. ((4, 5))。 4. } 5. 6. public String doit(int... vals){ 7. return b。 9. ((x == y) + + (sb1 == sb2))。 7. StringBuilder sb2 = sb1。 5. x++。 24. } 25. } What is the output? A. 300100100100100 B. 300300100100100 C. 300300300100100 D. 300300300300100 B 041 1. public class KungFu{ 2. public static void main(String[ ] args){ 3. Integer x = 400。 22. (() + )。 19. (() + )。 16. 17. Foo fooFoo = fooBar(foo)。 12. } 13. public static void main(String[ ] args){ 14. Foo foo = new Foo(300)。} 6. } 7. 8. public class Gamma{ 9. static Foo fooBar(Foo foo){ 10. Foo = new Foo(100)。} 4. public void setX(int x){ = x。 20. } 21. } Which one statements is true? (Choose one.) A. Compilation fails. B. An exception is thrown at runtime. C. The attribute id in the ItemTest object remains unchanged. D. The attribute id in the ItemTest object is modified to the new value. E. A new ItemTest object is created with the preferred value in the id attribute. A 040 1. class Foo{ 2. private int x。 18. (69)。} 14. public void updateId(int newId){id = newId。} CD 039 11. public class ItemTest{ 12. private final int id。} D. public One foo(){return this。} 6. } 7. class Three extends Two{ 8. //insert method here 9. } Which two methods, inserted individually, correctly plete the Three class? (Choose two.) A. public void foo(){ } B. public int foo(){return 3。} 32. } What is the result? A. 3 B. 23 C. 32 D. 123 E. 321 F. Compilation fails. G. An exception is thrown at runtime. D 038 1. class One{ 2. public One foo(){return this。} 26. } 27. class C3 extends C2{ 28. public C3(){(3)。} //more code here } void Holder int Doubler () h this amount int h amount 037 21. abstract class C1{ 22. public C1(){(1)。 public void doubleAmount(){ amount = ( Place here )。} //more code here } Place the code framgmets in position to reduce the coupling between Doubler and Holder. public class Doubler{ public static int doubleMe( Place here h){ return Place here * 2。 public void doubleAmount(){amount = (this)。 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. C 036 public class Doubler{ public static int doubleMe(Holder h){ return () * 2。 20. } 21. } and: 30. Hello c = new Hello(5)。 18. title = Hello。 13. public Hello(){ 14. title += World。 5. } 6. 7. class BabyRaccoon extends Mammal{ } Which four statments are true? (Choose four.) A. Raccoon isa Mammal. B. Raccoon hasa Mammal. C. BabyRaccoon isa Mammal. D. BabyRaccoon isa Raccoon. E. BabyRaccoon hasa Mammal. F. BabyRaccoon isa BabyRaccoon. ABCF 033 2. public class Hi{ 3. void m1(){ } 4. protected void m2(){ } 5. } 6. class Lois extends Hi{ 7. //insert code here 8. } Which four code fragments, inserted independently at line 7, will pile? (Choose four.) A. public void m1(){ } B. protected void m1(){ } C. private void m1(){ } D. void m2(){} E. pubic void m2(){} F. protected void m2(){ } G. private void m2(){ } ABEF 034 Which four statements are true? (Choose four.) A. Hasa relationships should never be encapsulated. B. Hasa relationships should be implemented using inheritance. C. Hasa relationships can be implemented using instance variables. D. Isa relationships can be implemented using the extends keyword. E. Isa relationships can be implemented using the implements keyword. F. The relationship between Movie and Actress is an example of an isa relationship. G. An array or a collection can be used to implement a onetomany hasa relationship. CDEG 035 10. public class Hello{ 11. String title。 11. } 12. } 13. class Sub extends Base{public static final String FOO = bar。 9. ()。 7. ()。 5. Sub s = new Sub()。 12. } 13. } What is the result? A. Value is: 8 B. Compilation fails. C. Value is: 12 D. Value is: 12 E. The code runs with no output. F. An exception is thrown at runtime. A 031 1. public class Base{ 2. public static final String FOO = foo。 10. (2)。 6. value *= multiplier。} 3. public void calculate(int multiplier){ 4. calculate()。 3. public void calculate(){value += 7。 ? 6. } ? 7. public double doit(int x){ ? 8. return 。 16. } 17. public static void main(String[] a){new Y(5)。 12. } 13. Y(int y){ 14. this()。 6. } 7. } 8. public class Y extends X{ 9. Y(){ 10. super(6)。} 3. X(int x){ 4. this()。} ... 20. class Animal{} ... 30. class Dog extends Animal{ 31. Tail tail。 13. ()。 5. } 6. } 7. class ExtendedA extends ClassA{ 8. private ExtendedA(int numberOfInstances){ 9. super(numberOfInstances)。s API. Once testing has begun, the programmer discovers that other classes that use the class she changed are no longer working properly. What design flaw is most likely the cause of there new bugs? A. Inheritance B. Tight coupling C. Low cohesion D. High cohesion E. Loose coupling F. Object immutablility B 025 1. class ClassA{ 2. public int numberOfInstances。 key rendering algorithms, and has assigned a programmer to replace the old algorithm with the new algorithm. When the programmer begins researching the utility classes, she is happy to discover that the algorithm to be replaced exists in only one class. The programmer reviews that class39。s old printers, but the new wireless printer