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OSU CSE 2221 Final Review 2024 Actual Questions with Verified Answers, 100% Guarantee Pass
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OSU CSE 2221 Final Review.pdf file:///C:/Users/HP/Desktop/SSSSSSS/OSU%20CSE%202221%20FOSU CSE 2221 Final Review
1. The correct syntax for the "main" method signature is:
*a.* private static void main(String[] args)
*b.* public static String main(String[] args)
*c.* public static void main(String[] args)
*d.* public void main(String[] args)
*e.* none of the above: c
2. The Java compiler does the following:
*a.* checks a bytecode program in a ".class" file for run-time errors and if there are none, it
generates source code for that program in a ".java" file
*b.* checks a source code program in a ".java" file for run-time errors and if there are none,
it generates bytecode for that program in a ".class" file
*c.* checks a source code program in a ".java" file for compile-time errors and, if there are
none, it generates bytecode for that program in a ".class" file
*d.* checks a bytecode program in a ".class" file for compile-time errors and if there are
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none, it generates source code for that program in a ".java" file
*e.* none of the above: c
3. Which statement correctly defines a java constant?
*a.* const SPECIAL = 1234;
*b.* int SPECIAL = 1234;
*c.* int final SPECIAL = 1234;
*d.* final int SPECIAL = 1234;
*e.* const int SPECIAL = 1234;: d
4. 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: d
5. The Checkstyle plugin for Eclipse is useful because:
*a.* it warns you of potential compile-time errors
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*b.* it helps you make your code understandable for yourself and other pro- grammers
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*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: b
6. 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: d
7. 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
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