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◼ Multiple Choice
1) Java is an object-oriented programming language. An object-oriented language
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(a) Uses structured programming.
(b) Views a program as consisting of objects which communicate through interactions.
(d) All of the above.
Answer: B
D
(c) Functionally breaks down problems into smaller, more manageable problems.
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2) In Java, the equal sign is used as the ___________ operator.
(a) increment
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(b) decrement
(c) assignment
(d) negation
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Answer: C
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3) In Java, source code is compiled into object code called ______________.
(a) Bit-code
(b) Class code
(c) Method code
(d) Byte-code
Answer: D
4) The hardest kind of error to detect in a computer program is a:
(a) Syntax error
(b) Run-time error
(c) Logic error
(d) All of the above
Answer: C
5) Identify the invalid Java identifier.
(a) 1Week
(b) Week1
(c) amountDue
(d) amount_due
Answer: A
6) What is the value of the variable amountDue?
double price = 2.50;
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double quantity = 5;
double amountDue = 0;
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amountDue = price * quantity;
(a) 12
(b)
(c)
12.25
12.5
D
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(d) 13
Answer: C
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7) What is the value of 7.52e-5?
(a) 752000.0
(b) 0.0000752
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(c) 0.000752
(d) 0.00752
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Answer: B
8) What is the Java expression for 4a 2 + 2b * c?
(a) (4 * a) + (2 * b) * c
(b) (4 * a * a) + ((2 * b) * c)
(c) ((4 * a * a) + (2 * b)) * c
(d) (4 + a * a) + ((2 + b) * c)
Answer: B
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