ISQS 3345 Test 1

When determining whether a number is inside a range, its best to use this operator. o && o ! o || o ? :

&&

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'

These characters mark the beginning of a multi-line comment. o // o /* o */ o /**

/*

These characters mark the beginning of a documentation comment. o // o /* o */ o /**

/**

These characters mark the beginning of a single-line comment. o // o /* o */ o /**

//

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

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

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

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

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 { }

To create a block of statements, you enclose the statement in these. o Parentheses ( ) o Square brackets [ ] o Angled brackets < > o Braces { }

Braces { }

The Java compiler generates. o Machine code o Byte code o Source code o HTML

Byte code

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

The if statement is an example of a _____. o Sequence structure o Decision structure o Pathway structure o Class structure

Decision Structure

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

Boolean variables may hold values 0 or 1.

F

When passing multiple arguments to a method, the order in which the arguments are passed is not important

F

When you write a constructor for a class, it still has the default constructor that Java automatically provides

F

Comments that begin with // can be processed by javadoc. o True o False

False

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

The = operator and the == operator perform the same operation. o True o False

False

Variable names may begin with a number. o True o False

False

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

This is a Boolean variable that signals when some condition exists in the program. o Flag o Signal o Sentinel o Siren

Flag

You can use this class to display dialog boxes. o JOptionPane o BufferedReader o InputStreamReader o DialogBox

JOptionPane

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 following data 72 , 'A' , "Hello World" , 2.8712 are all examples of ______. o Variables o Literals o Strings o None of these

Literals

&& , || , 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 is an empty statement that does nothing. o Missing statement o Virtual statement o Null statement o Conditional statement

Null statement

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

In the expression number++, the ++ operator is in what mode? o Prefix o Protest o Postfix o Posttest

Postfix

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

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

> , < , and == are _____. o Relational operators o Logical operators o Conditional operators o Ternary operators

Relational operators

Every complete statement ends with a ____. o Period o Parenthesis o Semicolon o Ending brace

Semicolon

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

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);

Each instance of a class has its own set of instance fields.

T

You cannot change the value of a variable whose declaration uses the final key word.

T

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

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

The conditional operator takes this many operands. o One o Two o Three o Four

Three

A conditionally executed block should be indented one level from the if clause. o True o False

True

A left brace in a Java program is always followed by a right brace later in the program. o True o False

True

A variable must be declared before it can be used. o True o False

True

All lines in a conditionally executed block should be indented one level. o True o False

True

The occurrence of a string literal in a Java program causes a String object to be created in memory, initialized with the string literal

True

The scope of a variable is limited to the block in which it is defined. o True o False

True

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

When passing an argument to a method, the argument's data type must be compatible with the parameter variable's data type.

True

You cannot change the value of a variable whose declaration uses the final key word. o True o False

True

The negation operator is _____. o Unary o Binary o Ternary o None of these

Unary

This is a named storage location in the computers memory. o Class o Key word o Variable o Operator

Variables

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

Which of the following is the logical AND operator? a. && b. || c. == d. &

a. &&

This is the software used to create Java programs. a. Java Development Kit b. Java compiler c. Java Virtual Method d. Java Virtual Machine

a. Java Development Kit

Which of the following is not a primitive data type? a. String b. int c. float d. boolean

a. String

This is a method that gets a value from a class's field, but does not change it. a. accessor b. constructor c. void d. mutator

a. accessor

Each byte is assigned a unique a. address b. CPU c. bit d. variable

a. address

A class is analogous to a a. blueprint b. house c. architect d. attribute

a. blueprint

When a local variable has the same name as a field, the local variable's name does this to the field's name. a. shadows b. complements c. deletes d. merges with

a. shadows

Which of the following escape sequences represents backspace? a. \\ b. \b c. \n d. \r

b. \b

If you were to look at a machine language program, you would see _________. a. Java source code b. a stream of binary numbers c. English words d. circuits

b. a stream of binary numbers

This section of a switch statement is branched to if none of the case values match the testExpression. a. else b. default c. case d. otherwise

b. default

When this access specifier is applied to a class member, the member cannot be accessed by code outside the class. What is this access specifier? a. public b. private c. void d. protected

b. private

This key word causes a value to be sent back from a method to the statement that called it. a. send b. return c. value d. public

b. return

When the value of an item is dependent on other data, and that item is not updated when the other data is changed, what has the value become? a. bitter b. stale c. asynchronous d. moldy

b. stale

UML stands for a. Universal Modeling Language b. Unified Model Language c. Unified Modeling Language d. Unicode Modelling Language

c. Unified Modeling Language

If you do not write a constructor for a class, this is automatically provided for the class. a. accessor method b. default instance c. default constructor d. predefined constructor

c. default constructor

In OOP, this refers to the combining of data and code into a single object. a. data hiding b. inheritance c. encapsulation d. polymorphism

c. encapsulation

This is a member of a class that holds data. a. method b. instance c. field d. constructor

c. field

These are words or names defined by the programmer. a. classes b. key words c. identifiers d. operators

c. identifiers

Which of the following is an access specifier? a. javac b. class c. public d. void

c. public

An object is a(n) a. blueprint b. attribute c. variable d. instance

d. instance

This is a method that stores a value in a field or in some other way changes the value of a field. a. accessor b. constructor c. void d. mutator

d. mutator

To find the classes needed for an object-oriented application, you identify all of the verbs in a description of the problem domain

f

This key word is used to declare a named constant. o constant o namedConstant o final o concrete

namedConstant

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

Which Scanner class method would you use to read a string as input? o nextString o nextLine o readString o getLine

nextLine

All relational operators are binary operators.

t

Switch statement only check for equality.

t