Java 2
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Which of the following is the newline character?
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\r
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\n
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\l
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\b
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Java 2 is a quiz designed to assess fundamental Java programming skills. It includes questions on variable manipulation, commenting syntax, and basic programming concepts, focusing on enhancing practical Java coding abilities.
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- 2.
Suppose that x and y are int variables and x = 10 and y = 20. After the statement: x = x + y; executes, the value of x is ____.
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10
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20
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30
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None of these
Correct Answer
A. 30Explanation
REF: 54Rate this question:
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- 3.
Which of the following is the correct syntax for commenting in Java?
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# Enter Comments Here
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""
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/* Enter Comments Here*/
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** Enter Comments Here **
Correct Answer
A. /* Enter Comments Here*/Explanation
REF: 91Rate this question:
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- 4.
Which of the following is NOT a reserved word in Java?
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Int
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Public
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Static
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Num
Correct Answer
A. NumExplanation
REF: 34Rate this question:
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- 5.
Which of the following is a valid int value?
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46,259
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46259
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462.59
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None of these
Correct Answer
A. 46259Explanation
REF: 37Rate this question:
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- 6.
The ____ rules of a programming language tell you which statements are legal, or accepted by the programming language.
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Semantic
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Logical
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Syntax
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Grammatical
Correct Answer
A. SyntaxExplanation
REF: 33Rate this question:
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- 7.
Suppose that x, y and z are int variables. The expression x(y+z) in Java is written as ____.
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X * y + z
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X * (y + z)
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Y + x * z
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None of these
Correct Answer
A. X * (y + z)Explanation
REF: 40Rate this question:
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- 8.
Suppose that x, y, z, and w are int variables. The expression x(y-z)/w in Java is written as ____.
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X * y - z / w
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X * y - x * z / w
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X * (y - z) / w
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X (y - z) / w
Correct Answer
A. X * (y - z) / wExplanation
REF: 40Rate this question:
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- 9.
The declaration int a, b, c; is equivalent to which of the following?
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Int a b, c;
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Int a, b, c;
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Int abc;
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Int a b c;
Correct Answer
A. Int a, b, c;Explanation
REF: 91 | 92Rate this question:
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- 10.
What is the output of the following statement? System.out.println("Welcome \n Home");
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WelcomeHome
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Welcome Home
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Welcome (on first line) Home (on second line)
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Welcome \n Home
Correct Answer
A. Welcome (on first line) Home (on second line)Explanation
REF: 76Rate this question:
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- 11.
The expression (double)(6 + 2) evaluates to ____.
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7
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8
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8.0
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10
Correct Answer
A. 8.0Explanation
REF: 49 | 50Rate this question:
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- 12.
The expression (int)6.9 + (int)7.9 evaluates to ____.
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13
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14
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14.8
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15
Correct Answer
A. 13Explanation
REF: 49 | 50Rate this question:
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- 13.
Suppose that x = 5 and y = 6. What is the output of the following Java statement? System.out.println("Sum of " + x + " and " + y + " = " + (x + y));
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Sum of 5 and 6 = 11
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Sum of x and y = 11
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Sum of x and y = x + y
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None of these
Correct Answer
A. Sum of 5 and 6 = 11Explanation
REF: 72 | 75Rate this question:
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- 14.
Suppose that x is an int variable. What is the value of x after the following statement executes: x = 15 + (int)(10.5) / 2;.
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20
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20.25
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21
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22
Correct Answer
A. 20Explanation
REF: 49 | 50Rate this question:
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- 15.
The length of the string "computer science" is:
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14
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15
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16
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18
Correct Answer
A. 16Explanation
REF: 51Rate this question:
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- 16.
The expression (int)9.9 evaluates to ____.
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9
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9.0
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9.9
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10
Correct Answer
A. 9Explanation
REF: 49 | 50Rate this question:
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- 17.
The value of the expression 26 + 14 / 3 + 1 is ____.
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10
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14
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29
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31
Correct Answer
A. 31Explanation
REF: 45Rate this question:
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- 18.
The value of the expression 17 % 7 is ____.
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1
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2
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3
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None of these
Correct Answer
A. 3Explanation
REF: 40Rate this question:
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- 19.
Which of the following is a legal identifier?
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Program!
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Program_1
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1program
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Program 1
Correct Answer
A. Program_1Explanation
REF: 34Rate this question:
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- 20.
Suppose that alpha and beta are int variables. The statement alpha = beta++; is equivalent to the statement(s) ____.
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Alpha = 1 + beta;
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Alpha = alpha + beta;
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Alpha = beta; beta = beta + 1;
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None of these
Correct Answer
A. Alpha = beta; beta = beta + 1;Explanation
REF: 70 | 71Rate this question:
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- 21.
Which of the following is NOT a special symbol in Java?
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+
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#
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!=
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?
Correct Answer
A. #Explanation
REF: 33Rate this question:
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- 22.
The value of the expression 26 – 14 % 3 + 1 is ____.
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0
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1
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24
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25
Correct Answer
A. 25Explanation
REF: 41Rate this question:
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- 23.
The value of the expression 1 + 5 % 3 is ____.
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0
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2
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3
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4
Correct Answer
A. 3Explanation
REF: 45Rate this question:
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- 24.
Suppose that alpha is a double variable. What is the value of alpha after the following statement executes: alpha = 11.5 + (double)(15) / 2;
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18.0
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18.5
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19.0
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None of these
Correct Answer
A. 19.0Explanation
REF: 49 | 50Rate this question:
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- 25.
Operators that have two operands are called ____.
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Unary operands
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Binary operands
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Operators
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Expressions
Correct Answer
A. Binary operandsExplanation
REF: 45Rate this question:
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- 26.
Suppose x = 2 and y = 3. If the statement x *= y; is executed once, what is the value of x?
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2
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3
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5
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6
Correct Answer
A. 6Explanation
REF: 93Rate this question:
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- 27.
Which of the following is a valid Java identifier?
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1Stop_and_go
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#salaryForTheMonth
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_Hello_There
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MyNumber!
Correct Answer
A. _Hello_ThereExplanation
REF: 34Rate this question:
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- 28.
Suppose that x = 5 and y = 6. What is the output of the following Java statement? System.out.println("Sum of " + x + " and " + y + " = " + x + y);
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Sum of 5 and 6 = 11
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Sum of 5 and 6 = 56
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Sum of x and y = 11
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None of these
Correct Answer
A. Sum of 5 and 6 = 56Explanation
REF: 72 | 75Rate this question:
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- 29.
The value of the expression 44 / 10 is _____.
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0.4
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4
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4.0
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4.4
Correct Answer
A. 4Explanation
REF: 40Rate this question:
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- 30.
The value of 3 % 9 is ___.
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0
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1/3
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3
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9
Correct Answer
A. 3Explanation
REF: 40Rate this question:
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- 31.
Consider the following sequence of statements. String str; int num1, num2; num1 = 13; num2 = 24; str = "The sum = " + num1 + num2; What is the final value stored in str?
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The sum = 37
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The sum = 13 24
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The sum = 13 + 24
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The sum = 1324
Correct Answer
A. The sum = 1324Explanation
REF: 72Rate this question:
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- 32.
____ are executable statements that inform the user what to do.
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Variables
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Prompt lines
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Named constants
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Expressions
Correct Answer
A. Prompt linesExplanation
REF: 90Rate this question:
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- 33.
Which of the following statements about a named constant is NOT true?
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Its content cannot change during program execution.
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Its value can be changed during program execution.
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It is a memory location.
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It is declared using the reserved word final.
Correct Answer
A. Its value can be changed during program execution.Explanation
REF: 52Rate this question:
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- 34.
What is the floating-point notation for 25.611?
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2.5E1
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2.6
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2.561100E1
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256.1100E1
Correct Answer
A. 2.561100E1Explanation
REF: 39Rate this question:
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- 35.
Suppose x = 2 and y = 3. If the statement x *= y; is executed once, what is the value of y?
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2
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3
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5
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6
Correct Answer
A. 3Explanation
REF: 93Rate this question:
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- 36.
Suppose that alpha and beta are int variables. The statement alpha = ++beta; is equivalent to the statement(s) ____.
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Beta = beta + 1; alpha = beta;
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Alpha = 1 + beta;
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Alpha = alpha + beta;
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None of these
Correct Answer
A. Beta = beta + 1; alpha = beta;Explanation
REF: 70 | 71Rate this question:
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- 37.
What type of Java statement(s) stores a value in a variable?
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Input
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Output
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Assignment
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Both an input statement and an assignment statement
Correct Answer
A. Both an input statement and an assignment statementExplanation
REF: 54Rate this question:
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- 38.
Consider the following program. // Insertion Point 1 public class CircleArea { // Insertion Point 2 static final float PI = 3.14 public static void main(String[]args) { //Insertion Point 3 float r = 2.0; float area; area = PI * r * r; System.out.println("Area = " + area); } // Insertion Point 4 } In the above code, where do the import statements belong?
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Insertion Point 1
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Insertion Point 2
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Insertion Point 3
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Insertion Point 4
Correct Answer
A. Insertion Point 1Explanation
REF: 82 | 83Rate this question:
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- 39.
Which of the following is a reserved word in Java?
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Char
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Char
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CHAR
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None of these
Correct Answer
A. CharExplanation
REF: 34Rate this question:
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- 40.
The value of the expression 36 – 15 % 2.0 + 1 is ____.
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36
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36.0
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37
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This is an illegal Java expression
Correct Answer
A. 36.0Explanation
REF: 46 | 47Rate this question:
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- 41.
Given int one; double two; boolean four; Which of the following assignment statements are valid? (i) one = 7 + 3 % 4; (ii) 2.3 + 3.5 = two; (iii) four = (2 <= 3);
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Only (i) is valid
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(i) and (ii) are valid
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(ii) and (iii) are valid
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(i) and (iii) are valid
Correct Answer
A. Only (i) is validExplanation
REF: 54Rate this question:
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- 42.
All of the following are examples of integral data types EXCEPT ____.
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Int
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Char
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Double
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Byte
Correct Answer
A. DoubleExplanation
REF: 36Rate this question:
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Current Version
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Mar 22, 2023Quiz Edited by
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Nov 28, 2015Quiz Created by
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