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Question 1

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Which of the following keywords is useful for skipping to the next iteration of a loop?

Select one:

a. do

b. break

c. switch

d. continue

e. while

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Question 2

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Consider the following line of Java code.
System.out.println("Hello, World!");
"out" is which of the following?

Select one:

a. a statement

b. a class

c. a parameter

d. a method (subroutine)

e. an object

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Question 3

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Consider the following block of Java code. How many times will it output "Hello"?
for (int i = 1; i < 10; i--)
{
    System.out.println("Hello");
}

Select one:

a. 0

b. 9

c. 1

d. 10

e. Way too many!

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Question 4

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Consider the following class definition. Which variables can be used in the missing "println" expression on line 17?
public class PrintStuff
2 {
3      public static void main()
4      {
6          {
7              int i = -1;
8              System.out.println(_____);
9          }
10         int j = 1;
11         for (j = 0; j < 10; j++) {
12             System.out.println(_____);
13         }
14         {
15             int k;
16             for (k = 0; k < 10; k++) {
17                System.out.println(_____);
18             }
19         }
20        System.out.println(_____);
21     }
22 }

Select one:

a. Only "j"

b. "j" and "k"

c. Only "i"

d. "i" and "j"

e. Only "k"

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Question 5

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In a for loop, how many times does the update run?

Select one:

a. At least once, at the end of each iteration.

b. Zero or more times, at the end of each iteration.

c. Exactly once.

d. Zero or more times, at the beginning of each iteration.

e. At least once, at the beginning of each iteration.

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Question 6

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Which of the following keywords is useful for making a loop that may execute forever or may not execute at all?

Select one:

a. do

b. continue

c. break

d. switch

e. while

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Question 7

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Consider the following Java program:

1 public class HelloWorld {
2     // My first program!
3     public static void main(String[] args) {
4         System.out.println("Hello, World!");
5     }
6 }

What starts on line 1?

Select one:

a. a method (subroutine) definition

b. a comment

c. a statement

d. a variable declaration

e. a class definition

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Question 8

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What is output by the following Java program?

class Compute {
    static int compute() { return 42; }
    static int compute(int i) { return i+1; }
    public static void main(String[] args) {
        System.out.println(compute(compute(0)));
    }
}

Select one:

a. 0

b. 42

c. 43

d. 1

e. 2

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Question 9

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Which one of the following is used in Java programming to handle asynchronous events?

Select one:

a. event handlers

b. short circuits

c. protocols

d. reserved words

e. pragmatics

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Question 10

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Consider the following Java declaration and assignment statement.
float x = y;
Which one of the following types is "y" NOT allowed to be?

Select one:

a. long

b. float

c. short

d. double

e. int

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Question 11

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In a for loop, how many times does the continuation condition run?

Select one:

a. Exactly once.

b. Zero or more times, at the end of each iteration.

c. At least once, at the end of each iteration.

d. Zero or more times, at the beginning of each iteration.

e. At least once, at the beginning of each iteration.

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Question 12

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Assume "test" is a boolean variable. Which of the following expressions is equivalent to "test == false"?

Select one:

a. !test

b. test = true

c. test

d. test.equals(true)

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Question 13

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Consider the following Java program:

1 public class HelloWorld {
2     // My first program!
3     public static void main(String[] args) {
4         System.out.println("Hello, World!");
5     }
6 }

What is on line 3?

Select one:

a. a comment

b. a statement

c. a variable declaration

d. a class definition

e. a method (subroutine) definition

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Question 14

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Assume that the variables "x" and "y" both have type "int". Which one of the following is NOT a boolean expression?

Select one:

a. x = y

b. x >= y

c. ((x > 0) && (y > 0))

d. (x > 0) ? (x > y) : (x < y)

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Question 15

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Which one of the following lines of Java code does NOT include a method call?

Select one:

a. compute();

b. int x = compute(y);

c. compute(x,y,z);

d. void compute() {}

e. if (i < 1) { compute(); }

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Question 16

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Consider the following Java program:

1 public class HelloWorld {
2     // My first program!
3     public static void main(String[] args) {
4         System.out.println("Hello, World!");
5     }
6 }

What starts on line 4?

Select one:

a. a variable declaration

b. a method (subroutine) definition

c. a class definition

d. a comment

e. a statement

Clear my choice

Question 17

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Consider the following line of Java code.
System.out.println("Hello, World!");
"println" is which of the following?

Select one:

a. a class

b. a method (subroutine)

c. an object

d. a parameter

e. a statement

Clear my choice

Question 18

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Consider the following line of Java code.
System.out.println("Hello, World!");
"Hello ,World" is which of the following?

Select one:

a. a class

b. a method (subroutine)

c. an object

d. a parameter

e. a statement

Clear my choice

Question 19

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Consider the following Java method, which term best describes "'System.out.println("Hello, World!")"?

public static void main(String[] args) {
    System.out.println("Hello, World!");
}

Select one:

a. actual parameter or argument

b. return type

c. modifier

d. formal parameter

e. method call

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Question 20

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Consider the following class definition. Which variables can be used in the missing "println" expression on line 20?
public class PrintStuff
2 {
3      public static void main()
4      {
6          {
7              int i = -1;
8              System.out.println(_____);
9          }
10         int j = 1;
11         for (j = 0; j < 10; j++) {
12             System.out.println(_____);
13         }
14         {
15             int k;
16             for (k = 0; k < 10; k++) {
17                System.out.println(_____);
18             }
19         }
20        System.out.println(_____);
21     }
22 }

Select one:

a. "j" and "k"

b. Only "j"

c. Only "k"

d. Only "i"

e. "i" and "j"

Clear my choice

Answer 1

1)  d. continue
2)  e. an object
3)  e. Way too many!
4)  b. "j" and "k"