Java Ch 1-3 Test
.jpg "Java Ch 1-3 Test - Quiz")
- 1.The ____ is the brain of the computer.
- A.
Arithmetic logic unit
- B.
Central processing unit
- C.
Accumulator
- D.
Control unit
- 2.All data must be brought into ____ before a program can manipulate it.
- A.
Secondary storage
- B.
Main memory
- C.
An output device
- D.
All answers are correct
- 3.When the power is switched off, everything in ____ is lost.
- A.
Main memory
- B.
Secondary storage
- C.
Hard disks
- D.
Floppy disks
- 4.The devices that feed data and programs into computers are called ____.
- A.
Output devices
- B.
Input devices
- C.
Monitors
- D.
Printers
- 5.The term MB refers to ____.
- A.
Megabyte
- B.
My byte
- C.
Moving byte
- D.
None of the answers are correct
- 6.A program called a(n) ____ translates the assembly language instructions into machine language and then executes it.
- A.
Loader
- B.
Interpreter
- C.
Compiler
- D.
Assembler
- 7.In a Java program, the file name must be the same as the ____.
- A.
Method name
- B.
Class name
- C.
Object name
- D.
Data name
- 8.When all ____ errors are removed, the compiler generates the machine code (bytecode in Java).
- A.
Logical
- B.
Syntax
- C.
Linking
- D.
Run-time
- 9.To develop a program to solve a problem, you start by ____.
- A.
Analyzing the problem
- B.
Implementing the solution in Java
- C.
Designing the algorithm
- D.
Entering the solution into a computer system
- 10.In Java, the mechanism that allows you to combine data and operations on the data into a single unit is called a(n) ____.
- A.
Object
- B.
Class
- C.
Method
- 11.The ____ rules of a programming language tell you which statements are legal, or accepted by the programming language.
- A.
Semantic
- B.
Logical
- C.
Syntax
- D.
Grammatical
- 12.Which of the following is NOT a special symbol in Java?
- A.
+
- B.
#
- C.
!=
- D.
?
- 13.Which of the following identifiers is not valid?
- A.
Sum
- B.
_sum
- C.
$sum
- D.
5sum
- 14.Oranges = oranges * (expression); is equivalent to oranges *= expression;
- A.
True
- B.
False
- 15.Primitive Data types in Java do not include:
- A.
Integral
- B.
Floating Point
- C.
Boolean
- D.
Decimal
- 16.Integral Data Types in Java do not include:
- A.
Char
- B.
Long
- C.
Int
- D.
Double
- 17.A null or empty string has at least one character that is a space.
- A.
True
- B.
False
- 18.Named constants
- A.
They cannot be changed during program execution
- B.
They are declared using the reserved word final
- C.
They are initialized when they are declared
- D.
They should be created in all capital letters
- 19.Int num1; The statement above declares and initializes the value of num1.
- A.
True
- B.
False
- 20.Which of the following methods would you use to read in a number such as 2.3 for a variable?
- A.
Next();
- B.
NextInt();
- C.
NextDouble();
- D.
NextLine();
- 21.The value of the expression 26 – 14 % 3 + 1 is ____.
- A.
0
- B.
1
- C.
24
- D.
25
- 22.Which of the following is a legal identifier?
- A.
Program!
- B.
Program_1
- C.
1program
- D.
Program 1
- 23.Which of the following is a valid int value?
- A.
46,259
- B.
46259
- C.
462.59
- D.
46,259.59
- 24.Consider the following sequence of statements. String str; int num1, num2; num1 = 13; num2 = 24; str = "The sum = " + num1 + num2; What is the final value stored in str?
- A.
The sum = 37
- B.
The sum = 13 24
- C.
The sum = 13 + 24
- D.
The sum = 1324
- 25.What is the output of the following statement? System.out.println("Welcome \n Home");
- A.
WelcomeHome
- B.
Welcome Home
- C.
Welcome Home
- D.
Welcome \n Home
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