CSC200 Ch. 5 Quiz

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) { ... }

All four methods are overloaded

Which of the following can be an argument to a method?

All of these (constants, variables, and expressions)

The parameter list in the method header and the arguments in the method call must agree in ________.

All of these (number, type, and order)

Which operator can be used in string concatenation?

+=

Which statement below could be used to simulate the outputs of rolling a six-sided die? Suppose randomNumbers is a SecureRandom object.

1 + randomNumbers.nextInt(6);

Which statement creates a random value from the sequence 2, 5, 8, 11 and 14. Suppose randomNumbers is a SecureRandom object.

2 + 3 * randomNumbers.nextInt(5);

A Java class can have which of the following methods?

A, B, C, D (all of them except the one that says void foo(int b))

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

Color

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

stack overflow

Information is passed to a method in __________.

the arguments to the method

When an object is concatenated with a String, ____________.

the object's toString method is implicitly called to obtain the String representation of the object

To declare a method as static, place the keyword static before ________ in the method's declaration.

the return type

Math static method random generates a random double value in the range from 0.0 ________.

up to but not including 1.0

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

without creating an instance of the class in which main is declared

Consider the following Java statements: int x = 9; double y = 5.3; result = calculateValue(x, y); Which of the following statements is false?

x and y are parameters.

Which of the following statements is false?

If a method does not return a value, the return-value-type in the method declaration can be omitted.

Which of the following statements describes block scope?

It begins at the identifier's declaration and ends at the terminating right brace (}).

Stacks are known as ________ data structures.

LIFO

Which is a correct static method call of Math class method sqrt?

Math.sqrt(900);

Which of these statements best defines scope?

Scope is the portion of a program that can refer to an entity by its simple name.

Which of the following statements is false?

The Java API consists of import declarations.

Identifiers in Java have ________ and ________ scopes.

class, block

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

classes

Which of the following promotions of primitive types is not allowed to occur?

double to float

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

e

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) ________.

enum

Filled rectangles and filled circles are drawn using Graphics method ________ and ________.

fillRect, fillOval

Which of the following is not a package in the Java API?

java.component

Overloaded methods always have the same ________.

method name

The identifiers in an enumeration ________.

must be unique

In a class containing methods with the same name, the methods are distinguished by ________.

number of arguments and types of arguments

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

parseInt

A well-designed method ________.

performs a single, well-defined task

Which of the following primitive types is never promoted to another primitive type?

both double and boolean

An overloaded method is one that ________.

has the same name as another method, but different parameters (by number, types or order of the types)

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.

randomNumbers.nextInt(2);

Method calls cannot be distinguished by _________.

return type