- Test Bank Chapter (1 to 20)
,Content
Chapter 1 Getting Started
Chapter 2 Console Input and Output
Chapter 3 Flow of Control
Chapter 4 Defining Classes I
Chapter 5 Defining Classes II
Chapter 6 Arrays
Chapter 7 Inheritance
Chapter 8 Polymorphism and Abstract Classes
Chapter 9 Exception Handling
Chapter 10 File I/O
Chapter 11 Recursion
Chapter 12 UML and Patterns
Chapter 13 Interfaces and Inner Classes
Chapter 14 Generics and the Array List Class
Chapter 15 Linked Data Structures
Chapter 16 Collections, Maps, and Iterators
Chapter 17 Swing I
Chapter 18 Swing II
Chapter 19 Java Never Ends
Chapter 20 Applets
,Chapter 1
Getting Started
Multiple Choice
1) Java is an object-oriented programming language. An object-oriented language (a)
Uses structured programming.
(b) Views a program as consisting of objects which communicate through
interactions.
(c) Functionally breaks down problems into smaller, more manageable problems.
(d) All of the above. Answer: B
2) In Java, the equal sign is used as the ___________ operator.
(a) increment
(b) decrement
(c) assignment
(d) negation Answer: C
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
1
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; double quantity = 5; double amountDue = 0;
amountDue = price * quantity;
(a) 12
(b) 12.25
(c) 12.5
(d) 13
Answer: C
7) What is the value of 7.52e-5?
(a) 752000.0
(b) 0.0000752
(c) 0.000752
(d) 0.00752
Answer: B
8) What is the Java expression for 4a2 + 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
9) What is the Java expression for 27xy?
(a) 27 + (x * y)
(b) 27 * (x + y)
(c) 27 * x * y
(d) 27x * y Answer: C 10) The value of the expression (int) 27.6 evaluates to:
(a) 28
(b) 27
(c) 26