Java 2

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Quizzes Created: 3 | Total Attempts: 2,074
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  • 1/42 Questions

    Which of the following is the newline character?

    • \r
    • \n
    • \l
    • \b
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About This Quiz

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.

Java Quizzes & Trivia

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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 ____.

    • 10

    • 20

    • 30

    • None of these

    Correct Answer
    A. 30
    Explanation
    REF: 54

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  • 3. 

    Which of the following is the correct syntax for commenting in Java?

    • # Enter Comments Here

    • ""

    • /* Enter Comments Here*/

    • ** Enter Comments Here **

    Correct Answer
    A. /* Enter Comments Here*/
    Explanation
    REF: 91

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  • 4. 

    Which of the following is NOT a reserved word in Java?

    • Int

    • Public

    • Static

    • Num

    Correct Answer
    A. Num
    Explanation
    REF: 34

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  • 5. 

    Which of the following is a valid int value?

    • 46,259

    • 46259

    • 462.59

    • None of these

    Correct Answer
    A. 46259
    Explanation
    REF: 37

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  • 6. 

    The ____ rules of a programming language tell you which statements are legal, or accepted by the programming language.

    • Semantic

    • Logical

    • Syntax

    • Grammatical

    Correct Answer
    A. Syntax
    Explanation
    REF: 33

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  • 7. 

                      Suppose that x, y and z are int variables. The expression x(y+z) in Java is written as ____.

    • X * y + z

    • X * (y + z)

    • Y + x * z

    • None of these

    Correct Answer
    A. X * (y + z)
    Explanation
    REF: 40

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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 ____.

    • X * y - z / w

    • X * y - x * z / w

    • X * (y - z) / w

    • X (y - z) / w

    Correct Answer
    A. X * (y - z) / w
    Explanation
    REF: 40

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  • 9. 

    The declaration int a, b, c; is equivalent to which of the following?

    • Int a b, c;

    • Int a, b, c;

    • Int abc;

    • Int a b c;

    Correct Answer
    A. Int a, b, c;
    Explanation
    REF: 91 | 92

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  • 10. 

                      What is the output of the following statement?   System.out.println("Welcome \n Home");

    • WelcomeHome

    • Welcome Home

    • Welcome (on first line) Home (on second line)

    • Welcome \n Home

    Correct Answer
    A. Welcome (on first line) Home (on second line)
    Explanation
    REF: 76

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  • 11. 

    The expression (double)(6 + 2) evaluates to ____.

    • 7

    • 8

    • 8.0

    • 10

    Correct Answer
    A. 8.0
    Explanation
    REF: 49 | 50

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  • 12. 

    The expression (int)6.9 + (int)7.9 evaluates to ____.

    • 13

    • 14

    • 14.8

    • 15

    Correct Answer
    A. 13
    Explanation
    REF: 49 | 50

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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));

    • Sum of 5 and 6 = 11

    • Sum of x and y = 11

    • Sum of x and y = x + y

    • None of these

    Correct Answer
    A. Sum of 5 and 6 = 11
    Explanation
    REF: 72 | 75

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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;.

    • 20

    • 20.25

    • 21

    • 22

    Correct Answer
    A. 20
    Explanation
    REF: 49 | 50

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  • 15. 

    The length of the string "computer science" is:

    • 14

    • 15

    • 16

    • 18

    Correct Answer
    A. 16
    Explanation
    REF: 51

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  • 16. 

    The expression (int)9.9 evaluates to ____.

    • 9

    • 9.0

    • 9.9

    • 10

    Correct Answer
    A. 9
    Explanation
    REF: 49 | 50

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  • 17. 

    The value of the expression 26 + 14 / 3 + 1 is ____.

    • 10

    • 14

    • 29

    • 31

    Correct Answer
    A. 31
    Explanation
    REF: 45

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  • 18. 

    The value of the expression 17 % 7 is ____.

    • 1

    • 2

    • 3

    • None of these

    Correct Answer
    A. 3
    Explanation
    REF: 40

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  • 19. 

                     Which of the following is a legal identifier?

    • Program!

    • Program_1

    • 1program

    • Program 1

    Correct Answer
    A. Program_1
    Explanation
    REF: 34

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  • 20. 

    Suppose that alpha and beta are int variables. The statement alpha = beta++; is equivalent to the statement(s) ____.

    • Alpha = 1 + beta;

    • Alpha = alpha + beta;

    • Alpha = beta; beta = beta + 1;

    • None of these

    Correct Answer
    A. Alpha = beta; beta = beta + 1;
    Explanation
    REF: 70 | 71

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  • 21. 

    Which of the following is NOT a special symbol in Java?

    • +

    • #

    • !=

    • ?

    Correct Answer
    A. #
    Explanation
    REF: 33

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  • 22. 

    The value of the expression 26 – 14 % 3 + 1 is ____.

    • 0

    • 1

    • 24

    • 25

    Correct Answer
    A. 25
    Explanation
    REF: 41

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  • 23. 

    The value of the expression 1 + 5 % 3 is ____.

    • 0

    • 2

    • 3

    • 4

    Correct Answer
    A. 3
    Explanation
    REF: 45

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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;

    • 18.0

    • 18.5

    • 19.0

    • None of these

    Correct Answer
    A. 19.0
    Explanation
    REF: 49 | 50

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  • 25. 

                       Operators that have two operands are called ____.

    • Unary operands

    • Binary operands

    • Operators

    • Expressions

    Correct Answer
    A. Binary operands
    Explanation
    REF: 45

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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?

    • 2

    • 3

    • 5

    • 6

    Correct Answer
    A. 6
    Explanation
    REF: 93

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  • 27. 

    Which of the following is a valid Java identifier?

    • 1Stop_and_go

    • #salaryForTheMonth

    • _Hello_There

    • MyNumber!

    Correct Answer
    A. _Hello_There
    Explanation
    REF: 34

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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);          

    • Sum of 5 and 6 = 11

    • Sum of 5 and 6 = 56

    • Sum of x and y = 11

    • None of these

    Correct Answer
    A. Sum of 5 and 6 = 56
    Explanation
    REF: 72 | 75

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  • 29. 

    The value of the expression 44 / 10 is _____.

    • 0.4

    • 4

    • 4.0

    • 4.4

    Correct Answer
    A. 4
    Explanation
    REF: 40

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  • 30. 

    The value of 3 % 9 is ___.

    • 0

    • 1/3

    • 3

    • 9

    Correct Answer
    A. 3
    Explanation
    REF: 40

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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?

    • The sum = 37

    • The sum = 13 24

    • The sum = 13 + 24

    • The sum = 1324

    Correct Answer
    A. The sum = 1324
    Explanation
    REF: 72

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  • 32. 

    ____ are executable statements that inform the user what to do.

    • Variables

    • Prompt lines

    • Named constants

    • Expressions

    Correct Answer
    A. Prompt lines
    Explanation
    REF: 90

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  • 33. 

                       Which of the following statements about a named constant is NOT true?

    • Its content cannot change during program execution.

    • Its value can be changed during program execution.

    • It is a memory location.

    • It is declared using the reserved word final.

    Correct Answer
    A. Its value can be changed during program execution.
    Explanation
    REF: 52

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  • 34. 

    What is the floating-point notation for 25.611?

    • 2.5E1

    • 2.6

    • 2.561100E1

    • 256.1100E1

    Correct Answer
    A. 2.561100E1
    Explanation
    REF: 39

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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?

    • 2

    • 3

    • 5

    • 6

    Correct Answer
    A. 3
    Explanation
    REF: 93

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  • 36. 

    Suppose that alpha and beta are int variables. The statement alpha = ++beta; is equivalent to the statement(s) ____.

    • Beta = beta + 1; alpha = beta;

    • Alpha = 1 + beta;

    • Alpha = alpha + beta;

    • None of these

    Correct Answer
    A. Beta = beta + 1; alpha = beta;
    Explanation
    REF: 70 | 71

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  • 37. 

    What type of Java statement(s) stores a value in a variable?

    • Input

    • Output

    • Assignment

    • Both an input statement and an assignment statement

    Correct Answer
    A. Both an input statement and an assignment statement
    Explanation
    REF: 54

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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?

    • Insertion Point 1

    • Insertion Point 2

    • Insertion Point 3

    • Insertion Point 4

    Correct Answer
    A. Insertion Point 1
    Explanation
    REF: 82 | 83

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  • 39. 

    Which of the following is a reserved word in Java?

    • Char

    • Char

    • CHAR

    • None of these

    Correct Answer
    A. Char
    Explanation
    REF: 34

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  • 40. 

    The value of the expression 36 – 15 % 2.0 + 1 is ____.

    • 36

    • 36.0

    • 37

    • This is an illegal Java expression

    Correct Answer
    A. 36.0
    Explanation
    REF: 46 | 47

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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);

    • Only (i) is valid

    • (i) and (ii) are valid

    • (ii) and (iii) are valid

    • (i) and (iii) are valid

    Correct Answer
    A. Only (i) is valid
    Explanation
    REF: 54

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  • 42. 

    All of the following are examples of integral data types EXCEPT ____.

    • Int

    • Char

    • Double

    • Byte

    Correct Answer
    A. Double
    Explanation
    REF: 36

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Quiz Review Timeline (Updated): Mar 22, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 28, 2015
    Quiz Created by
    Saifullah
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