OSU CSE 2221 FINAL REVIEW ACTUAL 65

OSU CSE 2221 FINAL REVIEW (ACTUAL / ) | 65

QUESTIONS WITH 100% VERIFIED CORRECT ANSWERS | |

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c

The correct syntax for the "main" method signature is:

• private static void main(String[] args)
• public static String main(String[] args)
• public static void main(String[] args)
• public void main(String[] args)
• none of the above

c

The Java compiler does the following:

• 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

• 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

• 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 1 / 4

• checks a bytecode program in a ".class" file for compile-time errors

and if there are none, it generates source code for that program in a ".java" file

• none of the above

d In design-by-contract, when the precondition (requires clause) of a

method is not satisfied the implementer of a method is obligated to:

• stop the program and report an error
• generate a default result that will let the client know of their error
• make sure the postcondition (ensures clause) is satisfied
• none of the above

a What is the value of k after this code completes?

int i = 0, j = 0, k = 0; while (i < 3) { i++; j = 0; while (j < 3) { j++; k = k + i + j;

} } 2 / 4

• 36
• 54
• 9
• 6

b For this line of XML, what is the attribute name? 5

• parts
• dist
• even
• 5

c Which is true of an XML tree?

• only tag nodes have a label property
• every node has an attribute property
• only tag nodes may have children
• only non-tag nodes can be leaf nodes
• none of the above 3 / 4

b Which is NOT a property of an RSS 2.0 feed?

• the root is an rss node with a version attribute whose value is "2.0"
• there are one or more channel nodes as a child of the root

c. the channel node must have one of each of these nodes as children:

title, link, and description

• the channel node can also have zero or more item child nodes plus

other optional children

• all the above are true for RSS 2.0

a What can you say about these two methods m1 & m2?

private static boolean m1(int x, int y) { boolean result; if (x>0 && y > 0) { result = false; } else { result = true; } return result; }

private static boolean m2(int x, int y)

• / 4