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CSE 2221 Final Exam Review 2024 Exam Questions and Verified Answers, 100% Guarantee Pass A+
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CSE 2221 Final Exam Review.pdf file:///C:/Users/HP/Desktop/pppppp/CSE%202221%20Final%20ExCSE 2221 Final Exam Review
1. For a method formal parameter p, which parameter mode guarantees that #p cannot
appear n the ensures clause for the method's contract?
a. clears
b. replaces
c. restores
d. updates
ANS B. replaces
2. You may reason about the behavior of Java code involving immutable types exactly as if
they were primitive types because
a. "Immutable" and "primitive" are synonyms; there is no difference between them
b. Computations involving immutable types are just as efficient as those involving
primitive types
c. Aliasing, which can happen with immutable types but not primitive types, cannot
cause trouble because object values for immutable types cannot be changed
d. In any code where an immutable type is used in a way where it would not behave like
1/
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,CSE 2221 Final Exam Review.pdf file:///C:/Users/HP/Desktop/pppppp/CSE%202221%20Final%20Ex
a primitive type, it causes a Java compile-time error
ANS C. Aliasing
3. Assume n is an int variable.Which Java expression is true exactly when n is an odd
number (not divisible by 2) and should be used to check for this situation?
a. n%2==0
b. n%2!=0
c. n%2==1
d. n%2!=1
ANS b. n%2!=0
4. what are the values of str and num after the call to foo? private
static void foo(String s, NaturalNumber n){ s="Columbus, " +s;
n=new NaturalNumber2(43210);
}
...String str = "Ohio";
NaturalNumber num=new NaturalNumber2(314); foo(str,num);
a. str="Ohio", num=314
b. str="Columbus, Ohio", num=314
c. str="Ohio", num=43210
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,CSE 2221 Final Exam Review.pdf file:///C:/Users/HP/Desktop/pppppp/CSE%202221%20Final%20Ex
d. str="Columbus, Ohio", num=43210
ANS c. str="Ohio", num=314
5. What are the values of array and index after the call to bar? private
static void bar(int[] a, int i){
a[i]++;
3/
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