CSIS 212 FINAL EXAM - QUESTION AND ANSWERS.

CSIS 212 FINAL EXAM -
QUESTION AND ANSWERS
• Question 1
3 out of 3 points

Which statement below could be used to simulate the outputs of tossing a quarter to
get heads or tails? Suppose randomNumbers is a SecureRandom object.
Selected Answer: randomNumbers.nextInt(2);
• Question 2
3 out of 3 points

Overloaded methods always have the same _________.
Selected Answer: method name
• Question 3
3 out of 3 points

The identifiers in an enumeration ________.
Selected Answer: must be unique.
• Question 4
3 out of 3 points

Declaring main as static allows the JVM to invoke main ________.
Selected Answer: without creating an instance of the class in which main is declared.
• Question 5
3 out of 3 points

Variables should be declared as fields only if ________.

Selected they are required for use in more than one method or their values must be saved
Answer: between calls to the class’s methods
• Question 6
3 out of 3 points

The java.text package contains classes for manipulating all of the following items
except ________.
Selected Answer: classes
• Question 7
3 out of 3 points

, Which set of statements totals the items in each row of two-dimensional array items, and displays each
row’s total?


Selected Answer:
for (int row = 0; row < items.length; row++) {
int total = 0;


for (int column = 0; column < items[row].length; column++) {
total += items[row][column];


System.out.printf("Row %d's total is %d%n", row, total);
}
• Question 8
3 out of 3 points

Which of the following statements is false?
Selected When an argument is passed by reference, the called method can
Answer:
access the argument’s value in the caller directly but cannot modify it.
• Question 9
3 out of 3 points

A programmer must do the following before using an array:
Selected Answer: declare then create the array.
• Question 10
0 out of 3 points

How many Book objects are created by the following statement?
Book[] books = new Book[10];
Selected Answer: None of the above.
• Question 11
3 out of 3 points

In Java, multidimensional arrays ________.
Selected Answer: All of the above.
• Question 12
3 out of 3 points

What do the following statements do?
double[] array;
array = new double[14];
Selected Answer: Create a double array containing 14 elements.
• Question 13
3 out of 3 points