Question 2

Consider the following snippet of Java code:

boolean b = true; if(10 > 100 && b) System.out.print("1"); else System.out.print("2"); if(10 > 100 || b) System.out.println("3");

Which of the following is true of executing this code?

Group of answer choices

When executed, the code raises an exception.

The code does not compile.

When executed, it prints: 123

When executed, it prints: 3

When executed, it prints: 23

When executed, it prints: 2

When executed, it prints: 1

When executed, it prints: 1

When executed, it prints: 12

Question 3

Referring to the code in the previous question, what value of b would cause 1 but not 3 to be printed?

Group of answer choices

1

false

none of these choices

true

3

Question 4

Code snippet A:

for(int i = 0; i < 10; i++) for(int j = 0; j < 10; j++) for(int k = 0; k < 10; k++) System.out.println("Hello, World.");

Code snippet B:

for(int x = 0; x < 100; x++) System.out.println("Hello, World."); for(int y = 0; y < 100; y++) System.out.println("Hello, World."); for(int z = 0; z < 100; z++) System.out.println("Hello, World.");

Which code snippet prints Hello, World. more times?

Group of answer choices

Code snippet B prints more.

Code snippet A prints more.

Both code snippets print the same amount.

Question 5

Consider the following Java statement:

char[] arr = new char[50];

Which of the following expressions accesses the last character of the array arr?

Group of answer choices

arr[50]

arr[last]

arr[arr.length - 1]

none of these choices

Question 6

Suppose that we have defined a class called Point that contains only two public instance variables, int x and int y. Consider the following snippet of Java code:

Point p1 = null; if(flag) p1 = new Point(); p1.x = 3; p1.y = -5; Point p2 = p1; p2.x = 10; System.out.println("p1.x is " + p1.x + " and p2.x is " + p2.x);

Suppose that the value of flag is true. Which of the following is true of executing this code?

Group of answer choices

When executed, it prints: p1.x is 3 and p2.x is 3

When executed, it prints: p1.x is 3 and p2.x is 10

When executed, the code raises an exception.

When executed, it prints: p1.x is 10 and p2.x is 10

The code does not compile.

Question 7

Referring to the code in the previous question, suppose that the value of flag is false. Which of the following is true of executing this code?

Group of answer choices

When executed, it prints: p1.x is 3 and p2.x is 3

When executed, it prints: p1.x is 3 and p2.x is 10

When executed, the code raises an exception.

When executed, it prints: p1.x is 10 and p2.x is 10

The code does not compile.

Question 8

What is the testing technique in which the smallest testable parts of an application are individually and independently tested for correctness called?

Group of answer choices

regression testing

none of these choices

test first

unit testing

integrated testing