Section 1
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These characters mark the beginning of a multi-line comment. o // o /* o */ o /**
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Cards (109)
Section 1
(50 cards)
These characters mark the beginning of a multi-line comment. o // o /* o */ o /**
/*
The if statement is an example of a _____. o Sequence structure o Decision structure o Pathway structure o Class structure
Decision Structure
When Java converts a lower-ranked value to a higher-ranked type, it is called a(n) _____. o 4-Bit conversion o Escalating conversion o Widening conversion o Narrowing conversion
Widening conversion
How does the character 'A' compare to the character 'B'? o 'A' is greater than 'B' o 'A' is less than 'B' o 'A' is equal to 'B' o You cannot compare characters
'A' is less than 'B'
If one of an operators operands is a double, and the other operand is an int, Java will automatically convert the value of the double to an int. o True o False
False
Comments that begin with // can be processed by javadoc. o True o False
False
When determining whether a number is inside a range, its best to use this operator. o && o ! o || o ? :
&&
You can use this class to display dialog boxes. o JOptionPane o BufferedReader o InputStreamReader o DialogBox
JOptionPane
The = operator and the == operator perform the same operation. o True o False
False
The Java compiler generates. o Machine code o Byte code o Source code o HTML
Byte code
A conditionally executed block should be indented one level from the if clause. o True o False
True
This is a named storage location in the computers memory. o Class o Key word o Variable o Operator
Variables
This is an empty statement that does nothing. o Missing statement o Virtual statement o Null statement o Conditional statement
Null statement
These characters mark the beginning of a single-line comment. o // o /* o */ o /**
//
An else clause always goes with _____. o The closest previous if clause that doesn't already have its own else clause o The closest if clause o The if clause that is randomly selected by the compiler o None of these
The closest previous if clause that doesn't already have its own else clause
The conditional operator takes this many operands. o One o Two o Three o Four
Three
When an if statement is nested in the else clause of another statement, the only time the inner if statement is executed is when the Boolean expression of the outer if statement is true. o True o False
False
&& , || , and ! are _____. o Relational operators o Logical operators o Conditional operators o Ternary operators
Logical operators
This is an if statement that appears inside another if statement. o Nested if statement o Tiered if statement o Dislodged if statement o Structured if statement
Nested if statement
This determines whether two different String objects contain the same string. o The == operator o The = operator o The equals method o The StringCompare method
The equals method
These characters serve specific purposes, such as marking the beginning or ending of a statement, or separating items in a list. o Punctuation o Programmer-defined names o Key words o Operators
Punctuation
This section of a switch statement is branched to if none of the case expressions match the switch expression. o Else o Default o Case o Otherwise
Default
To create a block of statements, you enclose the statement in these. o Parentheses ( ) o Square brackets [ ] o Angled brackets < > o Braces { }
Braces { }
> , < , and == are _____. o Relational operators o Logical operators o Conditional operators o Ternary operators
Relational operators
This type of operator lets you manually convert a value, even if it means that a narrowing conversion will take place. o Cast o Binary o Uploading o Dot
Cast
What will the println statement in the following program segment display? Int x = 5; System.out.println(x++); o 5 o 6 o 0 o none of these
5
These characters mark the beginning of a documentation comment. o // o /* o */ o /**
/**
The following data 72 , 'A' , "Hello World" , 2.8712 are all examples of ______. o Variables o Literals o Strings o None of these
Literals
All lines in a conditionally executed block should be indented one level. o True o False
True
Every complete statement ends with a ____. o Period o Parenthesis o Semicolon o Ending brace
Semicolon
This key word is used to declare a named constant. o constant o namedConstant o final o concrete
namedConstant
This type of expression has a value of either true or false. o Binary expression o Decision expression o Unconditional expression o Boolean expression
Boolean expression
Which of the following are NOT valid assignment statements? o Total = 9; o 72 = amount; o profit = 129 o letter = 'W';
72 = amount; profit = 129
You cannot change the value of a variable whose declaration uses the final key word. o True o False
True
A variable must be declared before it can be used. o True o False
True
These are words or names that are used to identify storage locations in memory and parts of the program that are created by the programmer. o Punctuation o Programmer-defined names o Key words o Operators
Programmer-defined names
When an if statement is nested in the if clause of another statement, the only time the inner if statement is executed is when the Boolean expression of the outer if statement is true. o True o False
True
These are the rules that must be followed when writing a program. o Syntax o Punctuation o Key words o Operators
Syntax
You can use this method to display formatted output in a console window. o Format.out.println o Console.format o System.out.printf o System.out.formatted
System.out.printf
A group of statements, such as the contents of a class or a method, are enclosed in _____. o Braces { } o Parentheses ( ) o Brackets [ ] o Any of these will do
Braces { }
These are words that have a special meaning in the programming language. o Punctuation o Programmer-defined names o Key words o Operators
Key words
The negation operator is _____. o Unary o Binary o Ternary o None of these
Unary
A left brace in a Java program is always followed by a right brace later in the program. o True o False
True
Which Scanner class method would you use to read a string as input? o nextString o nextLine o readString o getLine
nextLine
Variable names may begin with a number. o True o False
False
This is a Boolean variable that signals when some condition exists in the program. o Flag o Signal o Sentinel o Siren
Flag
Which of the following are not valid println statements? o System.out.println + "Hello World"; o System.out.println("Have a nice day"); o Out.System.println(value); o Println.out(Programming is great fun);
System.out.println + "Hello World"; Out.System.println(value); Println.out(Programming is great fun);
The scope of a variable is limited to the block in which it is defined. o True o False
True
These are symbols or words that perform operations on one or more operands. o Punctuation o Programmer-defined names o Key words o Operators
Operators
Which Scanner class method would you use to read a double as input? o nextDouble o getDouble o readDouble o None of these; you cannot read a double with Scanner class
nextDouble
Section 2
(50 cards)
In a nested loop, the inner loop goes through all of its iterations for every iteration of the outer loop. o True o False
True
Allows you to create one of two values: True or False (they can't be copied to a variable of any type other than Boolean)
Boolean
It is not necessary to initialize accumulator variables. o True o False
False
operator used that let you convert a value, even if it means that a narrowing conversion takes place (less accurate)
Cast
Named storage location in the computer's memory. (The most fundamental way that Java programs store an item of data in memory is with a variable.)
Variables
Generated by the Java Compiler
Byte code
A variable may be defined in the initialization expression of the for loop. o True o False
True
% ... returns the remainder of a division operation involving two integers.
Modulus
used to store characters. Can only hold 1 character at a time
char
used in switch statements. Each case value must be unique. (Used as an alternative to if statements) Magic word - break multiple options
Case
The for loop is this type of loop. o Pretest o Posttest o Prefix o Postfix
Pretest
Integer that takes up 2 bytes of memory
Short
a group of related classes JOptionPane, IS, Scanner
Packages
What will the println statement in the following program segment display? Int x = 5; System.out.println(++x); o 5 o 6 o 0 o none of these
6
This is a special value that signals when there are no more items from a list of times to be processed. This value cannot be mistaken as an item from the list. o Sentinel o Flag o Signal o Accumulator
Sentinel
A container for an application
Class
The while loop is this type of loop. o Pretest o Posttest o Prefix o Postfix
Pretest
What is each repetition of a loop known as? o Cycle o Revolution o Orbit o Iteration
Iteration
This type of loop always executes at least once. o While o Do-while o For o Any of these
Do-while
A value that is written in the code of a program
Literal
A group of one or more programming statements that collectively has a name eg: main method (file name!)
Method
When a program is finished using a file, it should do this. o Erase the file o Close the file o Throw an exception o Reset the read position
Close the file
A set of numbers that are used as code for representing characters
Unicode
One limitation of the for loop is that only one variable may be initialized in the initialization expression. o True o False
False
Whole numbers (uses 4 bytes of memory)
Int
Method used for reading strings, bytes, integers, long integers, short integers, floats, and doubles. It waits for the user to press the enter key before it returns a value.
Scanner
consists of 8 bits... Integer that takes up 1 byte of memory
Byte
The do while loop is this type of loop. o Pretest o Posttest o Prefix o Postfix
Posttest
The data contained in an object. (An object is a software entity that contains data and procedures)
Attributes
The for loop is a posttest loop. o True o False
False
Allows you to quickly display a dialog box, which is a small graphical window displaying a message or requesting input.
JOptionPane
This class allows you to use the print and println methods to write data to a file. o File o FileReader o OutputFile o PrintWriter
PrintWriter
This expression is executed by the loop only once, regardless of the number of iterations. o Initialization expression o Test expression o Update expression o Pre-increment expression
Initialization expression
Rules that must be followed when writing a program. Syntax dictates how key words and operators may be used, and where punctuation symbols must appear.
Syntax
To calculate the total number of iterations of a nested loop, add the number of iterations of all the loops. o True o False
False
Decimal number to the 7th place (uses 4 bytes of memory)
Float
This is a variable that keeps a running total. o Sentinel o Sum o Total o Accumulator
Accumulator
The do-while loop is a pretest loop o True o False
False
To open a file for writing, you use the following class. o PrintWriter o FileOpen o OutputFile o FileReader
PrintWriter
In the expression number++, the ++ operator is in what mode? o Prefix o Protest o Postfix o Posttest
Postfix
This class allows you to read a line from a file. o FileWriter o Scanner o InputFile o FileReader
Scanner
To open a file for reading, you use the following classes. o File and Writer o File out Output o File and Input o File and Scanner
File and Scanner
Characters serve specific purposes, such as marking the beginning or ending of a statement, or separating items in a list.
Java Punctuation
This type of loop has no way of ending and repeats until the program is interrupted. o Intermediate o Interminable o Infinite o Timeless
Infinite
A collection of characters
String
The while loop is a pretest loop. o True o False
True
Allows you to format the appearance of floating-point numbers rounded to a specific number of decimal places. It is useful for formatting numbers that will be displayed in message dialogs
DecimalFormat
Decimal number to the 15th place (uses 8 bytes of memory)
Double
This is a variable that controls the number of iterations performed by a loop. o Loop control variable o Accumulator o Iteration register variable o Repetition meter
Loop control variable
Integer that takes up 8 bytes of memory
Long
Section 3
(9 cards)