OSU CSE 2221 EXAM STUDY GUIDE 2026 QUESTIONS AND ANSWERS 100% ACCURATE

OSU CSE 2221 EXAM STUDY GUIDE 2026
QUESTIONS AND ANSWERS 100%
ACCURATE

⩥ d. Answer: What is the value of s after the following statement:


String s = (!true) + " : " + (10 + 4) + " is 104";


*a.* "!true : 104 is 104"
*b.* "false : 104 is 104"
*c.* "!true : 14 is 104"
*d.* "false : 14 is 104"
*e.* This is a compile-time error


⩥ b. Answer: The Checkstyle plugin for Eclipse is useful because:


*a.* it warns you of potential compile-time errors
*b.* it helps you make your code understandable for yourself and other
programmers
*c.* it prevents your code from making errors caught by assert
statements
*d.* it tells you when code you have written does not obey its contract

,*e.* none of the above


⩥ d. Answer: If x is an int variable, when does the boolean expression
evaluate to true?


((x % 5 != 0) && (x % 2 != 0))


*a.* when x is divisible by 5 or by 2 but not by both
*b.* when x is divisible by 10
*c.* when x is not divisible by 10
*d.* when x is neither divisible by 5 nor by 2
*e.* when x is either divisible by 5 or by 2


⩥ b. Answer: The nextDouble( ) method of r, a variable of type Random,
returns a double in a range of [0,1). Which of these expressions would
you use to create a random number in the range of [-3,3)?


*a.* r.nextDouble( ) * 3.0 - 3.0
*b.* (r.nextDouble( ) - 0.5) * 6.0
*c.* r.nextDouble( ) * 6.0 + 3.0
*d.* r.nextDouble( ) * 6.0 + 0.5
*e.* (r.nextDouble( ) - 3.0) * 6.0

,⩥ a. Answer: Consider the following code fragment:


int x = 8;
while ((x / 3) != 2) { x = x - 1; }


How many times will the body of the loop execute?


*a.* 0
*b.* 1
*c.* 2
*d.* 3
*e.* the loop will never terminate


⩥ c. Answer: Consider the following method signature:


private static int examScore(int studentNum) {...}


Here, studentNum is called:


*a.* distinguished variable
*b.* an argument
*c.* a formal parameter

, *d.* an index
*e.* none of the above


⩥ a. Answer: What is the value of x after this statement?


double x = ;


*a.* 0.0
*b.* 0.5
*c.* 1.0
*d.* 2.0


⩥ c. Answer: Consider the following method and the client code. What
is true after the client code executes?


private static int m(int x, int y) {
y = x;
x = 0;
return y;
}


int num1 = 4, num 2 = 9;