1. If String str1 = "Forest" and String str2 = "School", then what is the value of

str1.compareTo(str2);?

Question 1 options:

1)

-1

2)	a value less than 0

3)

0

4)

1

5)	a value greater than 0

2. Assume that age has been declared as an int variable. Which expression is true

whenever age indicates that the person is a teenager?

Question 2 options:

1)	((age < 20) && (age >= 13))

2)	((age < 20) || (age >= 13))

3)	((age <= 19) && (age < 13))

4)	((age <= 19) || (age >= 13))

5)	((age <= 19) && (age >= 12))

3. !((x > y) || (y <= 0)) is equivalent to which of the following expressions?

I.!(x > y) || !(y <= 0) II.!(x > y) &&! (y <= 0) III. (x <= y) && (y > 0)

Question 3 options:

1)

I only

2)

II only

3)

III only

4)	I and III only

5)	II and III only

4. Assume that these String variables have been declared:

String str1 = new String("hello"); String str2 = new String("hello"); What is the value of the following expression? str1.equals(str2)

Question 4 options:

1)

true

2)

false

3)

hello

4)	hellohello

5)

equal

5. When is the following expression true?

!(!a || b) || (!a && b)

Question 5 options:

1)	If and only if a and b have different values

2)	If and only if a and b have the same value

3)	If and only if both a and b are true

4)	If and only if both a and b are false

5)	The expression is never true

6. What is output by the following program?

int i = 6; while (i >= 2) { System.out.print (i + " "); if ((i % 2) == 0) { i = i / 2; } else { i = i + 1; } }

Question 6 options:

1)

6 7 4 2

2)

6 3 4 2

3)

6 2 4 1

4)

6 5 4 3 2

5)

6 3 5 2

7. Given the following code:

if (n == 2) { k -= 2; } else if (n == 3) { k -= 3; } can be rewritten as if (< condition >) { < assignment statement >; }

where < condition > and < assignment statement > are chosen so that the rewritten code performs the same task as the original code. Assume that both n and k are integer variables.

Which of the following could be used as < condition >? I. (n == 2) || (n == 3) II. (n == 2) && (n == 3) III. (n >= 2) && (n <= 3)

Question 7 options:

1)

I only

2)

II only

3)

III only

4)	I and III only

5)	II and III only

8. What is stored in str after the following code executes?

String str = "Computer Science"; int i = 0; while (i < 8) { if (str.indexOf("m") < i) { str = str.substring(0, 2) + str; } i += 2; }

Question 8 options:

1)	Computer Science

2)	CoComputer Science

3)	CoCoComputer Science

4)	CoCoCoComputer Science

5)	Computer ScienceCo

9. Given the following code:

int i = 100; int j = 10; while (i > 0) { i = i / j; j = 1 + j % 5; } What is the value of i after this code executes?

Question 9 options:

1)

0

2)

1

3)

2

4)

5

5)

10

10. Consider the following code:

String[ ] words = {"cat", "dog", "lamb", "giraffe", "elephant"}; int i = 0, index = -1, temp; while (i < words.length) { temp = words[i].indexOf("a"); if (temp > index) { index = temp; } i++; } What is the value of index after this code executes?

Question 10 options:

1)

-1

2)

0

3)

1

4)

5

5)	An ArrayIndexOutOfBoundsException occurs.

11. Consider the following code examples, where all variables are of type int.

Example 1 x = n; y = x; while (x > 0) { y += 1; x /= 2; } Example 2 x = n; y = x; if (x > 0) { while (x > 1) { y += 1; x /= 2; } } Assume that the two examples start with the same value for variable n. For which value(s) of n do the two code examples compute the same value for variable y ? I.Any value less than zero II.The value zero III.Any value greater than zero

Question 11 options:

1)

I only

2)

II only

3)

III only

4)	I and II only

5)	I, II, and III

12. Suppose the following array is declared:

int[ ] grades = {88, 92, 95, 83}; What is the value ofgrades[3]?

Question 12 options:

1)	An ArrayIndexOutOfBoundsException occurs

2)

88

3)

92

4)

95

13. Suppose the following array is declared:

int[ ] grades = {88, 92, 95, 83};

and the following integer is declared:

int index = 10 - 2 * 4;

What is the value of grades[index]?

Question 13 options:

1)	An ArrayIndexOutOfBoundsException occurs

2)

88

3)

92

4)

95

5)

83

5)

83

14. Suppose the following array is declared:

int[ ] grades = {88, 92, 95, 83};

What are the values in grades after the following code executes?

grades[0] = grades[1];

grades[1] = grades[0];

Question 14 options:

1)	An ArrayIndexOutOfBoundsException occurs

2)	{92, 88, 95, 83}

3)	{88, 88, 95, 83}

4)	{92, 92, 95, 83}

5)	{88, 92, 95, 83}

15. Suppose the following array is declared:

int[ ] grades = {88, 92, 95, 83};

What is the value of grades[grades[0] / 22]?

Question 15 options:

1)	An ArrayIndexOutOfBoundsException occurs

2)

4

3)

88

4)

92

5)

95