Comp Sci Java Test

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Evaluate the following: 3.75 / 2.5

1.5

What is the ASCII value of 'A'

65

What is the output by the code: System.out.println(3+6);

9

A complier converts object code into machine code: True or False

True

Assignment operator changes a value of an object by moving a new value to the storage location: True or False

True

Many programmers pick up the bad habit of not completing planning steps before starting to code: True or False

True

Which of the following is not a computer application: Adobe Photoshop iTunes Windows 7 Operating System

Windows 7 Operating System

Which of the following would print a backslash on the screen is used in a print() or println(): \\\ \\ ^

\\

Which of the following is a new line character: \\ \n "

\n

What is the output by the code: System "a\tc");

a c -- because \t is tab

What is a method

a tool that helps organize a program

Who usually creates test data

the programmer

Which of the following types uses the least amount of memory: int long char double

char

What is the output by the code: System.out.print("dc\\dc");

dc\dc -- because \\ is \

What is the output by the code: System.out.print("abc";

error -- because there is no parenthesis after the second "

Which of the following Scanner methods can be used to read in a double: nextFloat(); nextDouble(); next();

nextDouble();

Which of the following methods is used to read in a line of words: nextLine(); next(); nextDouble();

nextLine();

What is the output of the code: public static void main(String args[]} { }

nothing

Every method must have an open and closed what

parenthesis

Which of the following methods would move the cursor down to the next line: print(); printLn(); printLINE(); println();

println();

The _____ contains the programmers original program code

source file

Never put a semicolon before an open what

bracket

What is the ASCII value of 'b'

98

Evaluate the following: 3 + 3 * 7 / 2

13

What is the output by the code: System.out.println(3+ " " +3);

3 3 -- because it is 3 + space +3

What is the output by the code: int x = 9; double y = x; System.out.println(y);

9.0

What is the output of the code: String s = "abcdef"; Sytstem.out.println(s);

abcdef

Which of the following lines correctly defines an integer variable: integer i = 234; i = 234; integer = 234; int i = 234;

int i = 234; -- its int not integer

What is not a legal reserved word for a java data type

integer -- its int

Which of the following is a valid identifier (variable name): 123java main (java java1234

java234 -- can't start with a number, special character, or reserved word

Within the Java industry, most all variable names are lower case: True or False

True

The ability to create methods in a programming language is of minor importance: True or False

False

What is the output by the code: System.out.println("\"9");

"9 -- because \" means double quote

Which of the following can be used to comment code in java

/* and //

In java, every program statement ends with a what

;

IDE means Integer Division Expression

False

Pseudocode is the only commonly used planning tool for programming: True or False

False

Reserved words are allowed to be used as identifier names in some programming languages: True or False

False

Identifier names should be meaningful: True or False

True

Which of the following lines correctly defines a char variable: char = 'c'; char d = 'c'; char = c

char d = 'c';

Given the statement, var must be which type? var = keyboard.nextDouble();

double

Which of the following is a 64 bit data type

double

Which of the following types uses the most memory: int char float double

double

Which of the following correctly defines a double variable: double d = 251.5 double = 251.5 double d = 251.5;

double d = 251.5;

Evaluate the following: 4 + 5 * %2

error


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