75 

What is the result?
(A) Compilation succeeds.
(B) Exactly one class does NOT compile.
(C) Exactly two classes do NOT compile.
(D) Exactly four classes do NOT compile.
(E) Exactly three classes do NOT compile.

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.

73 Which class correctly uses the Data interface and Info class? (A) (B) (C) (D) (E) (AB) 

複選題74 Which two classes correctly implement both the java.lang.Runnable and the java.lang.Cloneable interfaces? (Choose two.) (A)  (B)  (C) (D) (E) 

76 What is the result? (A) TestA (B) TestB (C) Compilation fails. (D) An exception is thrown at runtime.

77 What is the result? (A) 1 2 3 (B) Compilation fails because of an error in line 12. (C) Compilation fails because of an error in line 13. (D) Compilation fails because of an error in line 14. (E) A ClassCastException is thrown at runtime.

78 A developer is creating a class Book, that needs to access class Paper. The Paper class is deployed in a JAR named myLib.jar. Which three, taken independently, will allow the developer to use the Paper class while compiling the Book class? (Choose Three.)  1. The JAR file is located at $JAVA_HOME/jre/classes/myLib.jar.  2. The JAR file is located at $JAVA_HOME/jre/lib/ext/myLib.jar.  3. The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes /foo/myLib.jar/Paper.class.  4. The JAR file is located at /foo/myLib.jar and a classpath environment variable is set that includes /foo/myLib.jar.  5. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -cp /foo/myLib.jar/Paper Book.java  6. The JAR file is located at /foo/myLib.jar and the Book class is compiled using javac -d /foo/myLib.jar Book.java 7. The JAR file is located at foo/myLib.jar and the Book class is compiled using javac -classpath /foo/myLib.jar Book.java (A) 123 (B) 247 (C) 567 (D) 147

79 What is the result of executing XMLMessage.main? (A) text (B) Compilation fails. (C) ＜msg＞text＜/msg＞ (D) An exception is thrown at runtime.

80 What is the result? (A) w-f (B) f-p w-f (C) w-f b-f (D) f-p w-f b-f (E) Compilation fails. (AB) An exception is thrown at runtime.

81 What is the result? (A) The file will compile without error. (B) Compilation fails. Only line 7 contains an error. (C) Compilation fails. Only line 12 contains an error. (D) Compilation fails. Only line 13 contains an error. (E) Compilation fails. Only lines 7 and 12 contain errors. (AB) Compilation fails. Only lines 7 and 13 contain errors. (AC) Compilation fails. Lines 7, 12, and 13 contain errors.