Question 1

Which of the following statements describes block scope?

Accepted Answer

A)   It begins at the opening { of the class declaration and terminates at the closing }.
B)   It limits label scope to only the method in which it is declared.
C)   It begins at the identifier's declaration and ends at the terminating right brace (}) .
D)   It is valid for one statement only.E) B) and D)
F) A) and C)

Question 2

Information is passed to a method in ________.

Accepted Answer

A)   the method name
B)   that method's return
C)   the method body
D)   the arguments to the methodE) B) and C)
F) A) and D)

Question 3

Which of the following methods is not in the Math class?

Accepted Answer

A)   ceil
B)   abs
C)   parseInt
D)   logE) None of the above
F) B) and C)

Question 4

Consider the following Java statements:
Int x = 9;
Double y = 5.3;
Result = calculateValue(x, y) ;
Which of the following statements is false?

Accepted Answer

A)   A method is called with its name and parentheses.
B)   x and y are parameters.
C)   Copies of x and y are passed to the method calculateValue.
D)   x and y are arguments.E) A) and B)
F) A) and C)

Question 5

A set of named constants that start with the value 0 for the first constant and increment by 1 for each subsequent constant can be declared as a(n)  ________.

Accepted Answer

A)   class
B)   enum
C)   enumeration
D)   None of the above.E) A) and C)
F) None of the above

Question 6

Which statement below could be used to simulate the outputs of tossing a quarter to get heads or tails? Suppose randomNumbers is a SecureRandom object.

Accepted Answer

A)   randomNumbers.nextInt(7) ;
B)   randomNumbers.nextInt(2) ;
C)   randomNumbers.nextInt(1) ;
D)   randomNumbers.nextInt(25) ;E) B) and D)
F) B) and C)

Question 7

If more method calls occur than can have their activation records stored on the program execution stack, an error known as a ________ occurs.

Accepted Answer

A)   stack overflow.
B)   stack rewind.
C)   stack full.
D)   stack empty.E) B) and C)
F) C) and D)

Question 8

Which of the following methods are overloaded with respect to one another?
Public int max (int a, int b)  { … }
Public double max (double a, double b)  { … }
Public int max (int a, int b, int c)  { … }
Public double max (double a, double b, double c)  { … }

Accepted Answer

A)   A and B are overloaded; C and D are overloaded.
B)   A and C are overloaded; B and D are overloaded.
C)   A, B and C are overloaded.
D)   All four methods are overloaded.E) None of the above
F) All of the above

Question 9

Which of the following statements is false?

Accepted Answer

A)   The Java API consists of packages.
B)   The Java API helps programmers avoid "reinventing the wheel."
C)   The Java API consists of import declarations.
D)   None of the above.E) C) and D)
F) All of the above

Question 10

Identifiers in Java have ________ and ________ scopes?

Accepted Answer

A)   method, class.
B)   class, block.
C)   block, statement.
D)   statement, file.E) B) and C)
F) A) and D)

Question 11

Java uses class ________ to represent colors using their RGB values.

Accepted Answer

A)   Color
B)   Colors
C)   RGBColor
D)   RGBColorsE) A) and B)
F) None of the above

Question 12

Declaring main as static allows the JVM to invoke main ________.

Accepted Answer

A)   without knowing the name of the class in which main is declared.
B)   by creating an object of the class in which main is declared.
C)   without creating an instance of the class in which main is declared.
D)   None of the above.E) C) and D)
F) None of the above

Question 13

Overloaded methods always have the same _________.

Accepted Answer

A)   method name
B)   return type
C)   number of parameters
D)   order of the parametersE) C) and D)
F) B) and C) A

Question 14

Method log takes the logarithm of its argument with respect to what base?

Accepted Answer

A)   10
B)   e
C)   2
D)   piE) C) and D)
F) B) and C)

Question 15

The java.text package contains classes for manipulating all of the following items except ________.

Accepted Answer

A)   classes
B)   numbers
C)   strings
D)   charactersE) B) and C)
F) C) and D)

Question 16

Which of these statements best defines scope?

Accepted Answer

A)   Scope refers to the classes that have access to a variable.
B)   Scope determines whether a variable's value can be altered.
C)   Scope is the portion of a program that can refer to an entity by its simple name.
D)   Scope allows the programmer to use a class without using its fully qualified name.E) A) and B)
F) A) and D)

Question 17

Which of the following statements is false?

Accepted Answer

A)   If a method does not return a value, the return-value-type in the method declaration can be omitted.
B)   Placing a semicolon after the right parenthesis enclosing the parameter list of a method declaration is a syntax error.
C)   Redeclaring a method parameter as a local variable in the method's body is a compilation error.
D)   Forgetting to return a value from a method that should return a value is a compilation error.E) B) and C)
F) A) and C) A

Question 18

A well-designed method ________.

Accepted Answer

A)   performs multiple unrelated tasks
B)   repeats code found in other methods
C)   contains thousands of lines of code
D)   performs a single, well-defined taskE) B) and C)
F) A) and D)

Question 19

Method calls cannot be distinguished by ________.

Accepted Answer

A)   method name
B)   return type
C)   parameter lists
D)   method signatureE) A) and B)
F) B) and C)

Question 20

A Java class can have which of the following methods?
A. void foo(int a) 
B. void foo(int a, int b) 
C.void foo(double a) 
D. void foo(double a, double b) 
E. void foo(int b)

Accepted Answer

A)   All of the above.
B)   A, B, D, E.
C)   A, B, C, D.
D)   A, C, D, E.E) None of the above
F) A) and B) C

Exam 5: Methods

Which of the following statements describes block scope?

Correct AnswerverifiedShow Answer

Information is passed to a method in ________.

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Which of the following methods is not in the Math class?

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Consider the following Java statements: Int x = 9; Double y = 5.3; Result = calculateValue(x, y) ; Which of the following statements is false?

Correct AnswerverifiedShow Answer

A set of named constants that start with the value 0 for the first constant and increment by 1 for each subsequent constant can be declared as a(n) ________.

Correct AnswerverifiedShow Answer

Which statement below could be used to simulate the outputs of tossing a quarter to get heads or tails? Suppose randomNumbers is a SecureRandom object.

Correct AnswerverifiedShow Answer

If more method calls occur than can have their activation records stored on the program execution stack, an error known as a ________ occurs.

Correct AnswerverifiedShow Answer

Which of the following methods are overloaded with respect to one another? Public int max (int a, int b) { … } Public double max (double a, double b) { … } Public int max (int a, int b, int c) { … } Public double max (double a, double b, double c) { … }

Correct AnswerverifiedShow Answer

Which of the following statements is false?

Correct AnswerverifiedShow Answer

Identifiers in Java have ________ and ________ scopes?

Correct AnswerverifiedShow Answer

Java uses class ________ to represent colors using their RGB values.

Correct AnswerverifiedShow Answer

Declaring main as static allows the JVM to invoke main ________.

Correct AnswerverifiedShow Answer

Overloaded methods always have the same _________.

Correct AnswerverifiedA

Method log takes the logarithm of its argument with respect to what base?

Correct AnswerverifiedShow Answer

The java.text package contains classes for manipulating all of the following items except ________.

Correct AnswerverifiedShow Answer

Which of these statements best defines scope?

Correct AnswerverifiedShow Answer

Which of the following statements is false?

Correct AnswerverifiedA

A well-designed method ________.

Correct AnswerverifiedShow Answer

Method calls cannot be distinguished by ________.

Correct AnswerverifiedShow Answer

A Java class can have which of the following methods? A. void foo(int a) B. void foo(int a, int b) C.void foo(double a) D. void foo(double a, double b) E. void foo(int b)

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Identifiers in Java have and scopes?

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A

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C