66 
Which two are true? (Choose two.)  

1. The output is mm.  

2. The output is mc.  

3. Component is-a Meter.  

4. Component has-a Meter. 

5. DeluxeThingy is-a Component.  

6. DeluxeThingy has-a Component.
(A) 16
(B) 34
(C) 12
(D) 56

複選題60 And MainClass exists in the /apps/com/company/application directory. Assume the CLASSPATH environment variable is set to "." (current directory). Which two java commands entered at the command line will run MainClass? (Choose two.) (A) java MainClass if run from the /apps directory (B) java com.company.application.MainClass if run from the /apps directory (C) java -classpath /apps com.company.application.MainClass if run from any directory (D) java-classpath . MainClass if run from the /apps/com/company/application directory (E) java -classpath /apps/com/company/application:. MainClass if run from the /apps directory (AB) java com.company.application.MainClass if run from the /apps/com/company/application directory

61 If both classes are in the correct directories for their packages, and the Mammal class correctly defines the findSalmon() method, which change allows this code to compile? (A) add import animals. mammals.*; at line 2 in Salmon.java (B) add import animals.fish.*; at line 2 in GrizzlyBearjava (C) add import animals.fish.Salmon.*; at line 2 in GrizzlyBear.java (D) add import animals. mammals.GrizzlyBear*; at line 2 in Salmon.java

62 What is the result? (A) b 3 (B) b 8 (C) b 13 (D) f 3 (E) f 8 (AB) f 13 (AC) Compilation fails, (AD) An exception is thrown at runtime.

63 Which three are valid? (Choose three.)  1. p0 = p1;  2. p1 = p2,  3. p2 = p4;  4. p2 = (ClassC)p1;  5. p1 = (ClassB)p3;  6. p2 = (ClassC)p4; (A) 123 (B) 126 (C) 235 (D) 156

複選題67 Which two methods, inserted independently at line 17, correctly complete the Sales class? (Choose two.) (A) double getSalesAmount() { return 1230.45; } (B) public double getSalesAmount() { return 1230.45; } (C) private double getSalesAmount() { return 1230.45; } (D) protected double getSalesAmount() { return 1230.45; }

68 How many of these method names follow JavaBean Listener naming rules? (A) 1 (B) 2 (C) 3 (D) 4 (E) 5

複選題69 Which three are valid on line 12? (Choose three.) (A) final (B) static (C) native (D) public (E) private (AB) abstract (AC) protected

70 Given the fully-qualified class names: com.foo.bar.Dog com.foo.bar.blatz.Book com.bar.Car com.bar.blatz.Sun Which graph represents the correct directory structure for a JAR file from which those classes can be used by the compiler and JVM? (A) Jar A (B) Jar B (C) Jar C (D) Jar D (E) Jar E

複選題71 What is the result? (A) Compilation fails because of an error in line 3. (B) Compilation fails because of an error in line 7. (C) Compilation fails because of an error in line 9. (D) If you define D e = new E(), then e.bMethod() invokes the version of bMethod() defined in Line 5. (E) If you define D e = D(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 5. (AB) If you define D e = D(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 9.

72 Which statement is true about the class of an object that can reference the variable base? (A) It can be any class. (B) No class has access to base. (C) The class must belong to the geometry package. (D) The class must be a subclass of the class Hypotenuse.