Multiple Choice
Identify the letter of the choice that best
completes the statement or answers the question.
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1.
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The syntax of a language ...
a. | is the set of all words and symbols in the
language. | b. | consists of the rules for combining words into statements.. | c. | defines the rules for interpreting the meaning of
statements. | d. | is simply used for
storage. |
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2.
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Which type of programming error is the most difficult to debug?
a. | Syntax | c. | Logic | b. | Run-time | d. | Omission |
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3.
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Which of the following is not a primitive data type?
a. | int | c. | String | b. | char | d. | boolean |
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4.
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Which variable type would be the best choice to store a letter grade?
a. | int | c. | char | b. | double | d. | String |
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5.
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What is the output from the following statements? double x =
3.1415;
System.out.println(EasyFormat.format(x, 1, 3));
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6.
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Which keyword in Java declares a variable whose value cannot change?
a. | final | c. | constant | b. | const | d. | new |
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7.
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The expression 3 + 2 * 5 - 1 yields:
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8.
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Which of the following mixed-mode arithmetic expressions yields 8.0?
a. | 5 / 2 * 4.0 | c. | 5.0 / 2 * 4 | b. | 5 / 2.0 * 4 | d. | 5.0 / 2.0 * 4 |
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9.
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Which of the following identifiers is invalid?
a. | FIRSTNAME | c. | gross_income | b. | number3 | d. | 9innings |
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10.
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Which of the following expressions will result in an integer value?
a. | 3 / 2 + 8 / 9 - 5 | c. | 3 / 2.0 + 8 / 9 - 5 | b. | 3 / 2 + 8 / 9 - 5.0 | d. | 3 / 2 + 8.0 / 9 -
5 |
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11.
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Which of the following expressions will result in an answer of 3?
a. | (1 + 17 ) % 3 | c. | 12 % 3 - 1 | b. | 1 + 17 % 3 | d. | 5 * 2 % 3 |
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12.
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Which of the following does NOT contain a syntax error?
a. | double w, x, y and z; | b. | System.out.println(Hello again!”); | c. | value = keybd.readint(); | d. | num = a*(b + c);
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13.
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In the assignment statement below, what is the purpose of the (double)
used? int x = 3, y = 2;
double z =
(double) x / y;
a. | To double the amount of the answer, like multiplying by 2. | b. | To make sure that
the result of the division is a decimal number. | c. | To round the answer to the nearest
integer. | d. | To round the answer to the nearest tenth. |
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14.
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Assume the variable declarations below for this problem: int x = 3, y = 2, z = x + y;
Which
of the following output statements correctly displays the sentence below? 3 + 2 = 5a. | System.out.print(x + “+” + y + “=” +
z); | b. | System.out.print(x + “ + ” + y + “ = ” +
z); | c. | System.out.print(x + y + “ = ” +
z); | d. | System.out.print(x + y =
z); |
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15.
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What is the value of the expression below?
Math.pow(Math.abs(3-6),
Math.sqrt(4))
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