Which statement is true regarding the principles of an object-oriented language?
A. Persistence is not an optional object-oriented language requirement.
B. Inheritance does not occur when a new class is derived from an existing class or base class.
C. Encapsulation means hiding data in a class from other classes.
D. Class variables should not be global so all elements of the program can see them.
C
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Some developers like to use the ____ property for a field to document its contents, e.g., providing users with instructions about entering values into the field.
A. Name B. Description C. Purpose D. Data Type
Create a class Polynomial that is used to evaluate a polynomial function of x: The coefficients ai are floating-point numbers, the exponents of x are integers, and the largest exponent n—called the degree of the polynomial—is greater than or equal to zero. The class has the attributes
• degree—the value of the largest exponent n • coefficients—an array of the coefficients ai and the following methods: • Polynomial(max)—a constructor that creates a polynomial of degree max whose coefficients are all zero • setConstant(i, value)—sets the coefficient ai to value • evaluate(x)—returns the value of the polynomial for the given value x For example, the polynomial P(x) = 3 + 5 x + 2 x3 is of degree 3 and has coefficients a0 = 3, a1 = 5, a2 = 0, and a3 = 2. The invocation evaluate(7) computes and returns the result 724.
The ________ displays tabs for pages located within the selected section
Fill in the blank(s) with correct word
The GROUP BY clause is added after what clause?
a. SELECT b. ORDER BY c. WHERE d. HAVING