Section 1
Preview this deck
The rules that govern the correct order and usage of the elements of a language are called the______ of the language
Front
| 5 | 0 | ||
| 4 | 0 | ||
| 3 | 0 | ||
| 2 | 0 | ||
| 1 | 0 |
Active users
0
All-time users
0
Favorites
0
Last updated
6 years ago
Date created
Mar 1, 2020
Cards (109)
Section 1
(50 cards)
The rules that govern the correct order and usage of the elements of a language are called the______ of the language
Syntax
To run a Java program from a command line, we use the ________ command.
Java
Declare a variable x , suitable for storing values like 3.14159 and 6.02E23.
double x;
Write a complete main method that prints Hello, world to the screen.
public static void main( String[] helloWorld ) { System.out.println("Hello, world"); } 2) Print out a name: { System.out.println("Turing, Alan"); }
Which of the following IS a legal identifier? A) 5_And_10 B) Five_&_Ten C) ___________ E) LovePotion#9 F) "Hello World"
C) ___________
Which statement is NOT true: A) Machine languages can be used to express algorithms. B) Machine languages can be used to write programs that can run on any machine. C) Machine language consists of zeros and ones. D) Machine language is produced by compilers.
B: Machine languages can be used to write programs that can run on any machine.
The purpose of testing a program with different combinations of data is to expose run-time and _________ errors.
Logic.
Which of the following is NOT a legal identifier? A) outrageouslyAndShockinglyLongRunon B) _42 C) _ D) lovePotionNumber9 E) 7thheaven
E) 7thheaven
Changing the flow of control in a program to jump to some pre-written code is known as ___________ a method.
Calling.
Choose: An operating system a. is the chief hardware unit of a computer b. is loaded into the computer each time it needs to carry out an operation c. ensures that programs will not run on the computer at the same time d. allocates resources like memory to programs that are running
D. Allocates resources like memory to programs that are running.
Before a variable is used it must be A) defined B) declared C) imported D) evaluated E) assigned
B) declared
An identifier that cannot be used as a variable name is a ___________ word.
Reserved; (Reserved words are words, such as null, true, false.)
A location in memory used for storing data and given a name in a computer program is called a _________ because the data in the location can be changed.
variable
When a program is not running, it is stored on_________.
A disk.
Write a single statement that will print the message "first is " followed by the value of first, and then a space, followed by "second = ", followed by the value of second. Print everything on one line and go to a new line after printing. Assume that first has already been declared as a double and that second has been declared as an int . Assume also that the variables have already been given values .
System.out.println("first is " + first + " second = " + second + "
");
Which of the following is not true? A) An algorithm allows ambiguity. B) An algorithm, when carried out, must eventually stop. C) An algorithm, can be carried out by a human being.
A) An algorithm allows ambiguity.
Carrying out the steps of a program, starting with the first, then the second and proceeding to the last is known as _______ processing.
sequential.
Declare a float variable named price .
float price;
Define Method.
A method is a set of code which is referred to by name and can be called (Envoked).
In a network, a computer that performs specific services for other computers on the network is called a _____.
Server.
Write a complete program whose class name is Hello and that displays Hello, world on the screen.
//Smith, Trevor// //Hello// public class Hello {public static void main( String[] HEllo) { System.out.println( "Hello, world"); } }
In Java, an argument is A) a logical sequence of statements proving the correctness of a program. B) information that a method returns to its caller. C) information provided to a method. D) a verbal dispute.
C) information provided to a method.
Suppose your name was George Gershwin. Write a complete main method that would print your last name , followed by a comma, followed by aspace and your first name .
public static void main( String[] nameGame) { System.out.println("Gershwin, George"); }
Assume that message is a String variable . Write a statement to display its value on standard output .
System.out.println(message);
Of the following variable names, which is the best one for keeping track of whether a patient has a fever or not? A) temperature B) feverTest C) hasFever D) fever
C) hasFever
Mice, trackpads, keyboards, scanners, joysticks are all examples of________.
input devices.
In object-oriented programming a class is A) a group of people sharing the same relationship to the means of production. B) the term used for program. C) a model or template from which objects are created. D) a grouping of users sharing common objectives. E) a procedure for a calculation inside a program.
C) a model or template from which objects are created.
Mice, trackpads, keyboards, scanners, joysticks are all examples of________.
Output devises.
Which of the following is NOT a Java reserved word? A) public B) int C) main D) static E) void
A) public
Declare a double variable named netWeight .
double netWeight;
Declare two integer variables named profitStartOfQuarter and cashFlowEndOfYear .
int profitStartOfQuarter, cashFlowEndOfYear;
How do you print "Programming is not a spectator sport!"?
System.out.println( "Programming is not a spectator sport!" );
An error in a program that involves a violation of language rules will be detected at ____________ time.
compile.
When a program runs on a computer, it is stored in_______.
Random Access Memory(RAM)
When a program runs on a computer, the part of the computer that carries out the instructions is called the_____
Central Processing Unit(CPU)
Which of the following names in a program is equivalent to the name int? A ) Int B) INT C) All of the above D) None of the above
D) None of the above
The standard name of the Java compiler is _______?
Jvac
In a network, a computer that requests specific services for other computers on the network is called a ________.
Client.
Assume that word is a String variable . Write a statement to display the message "Today's Word-Of-The-Day is: " followed by the value of word on a line by itself on standard output .
System.out.println ("Today's Word-Of-The-Day is: "+ word);
Of the following variable names, which is the best one for keeping track of whether an integer might be prime or not? A) divisible B) isPrime C) mightBePrime D) number
C) mightBePrime
Words that have a special meaning in a programming language are called _________ .
Key words
Division by zero when the program is executing is an example of a ______________ error.
run-time.
A compiler A) maintains a collection of programs B) tests a program's logic C) translates source code into executable code D) translates executable code to machine code
C) Translates source code into executable code.
Files containing Java code must end with what "extension"? .
Java
Declare an integer variable named degreesCelsius .
int degreesCelsius;
Define Indentifieres:
Indentifirs are symbolic names you give to your class, metod, or and data. Indintifiers must start with a Java letter and may contain any combinatuin of letters, but no spaces.
In object-oriented programming a method is A) A design technique for creating classes. B) A disciplined way of writing programs. C) An approach developed by the great Stanislawski. a process for instantiating an object. D) Code that allows access to an object's attributes or that carries out some other action for the object.
D) Code that allows access to an object's attributes or that carries out some other action for the object.
Declare a long integer variable named grossNationalProduct .
long grossNationalPark;
Print statement to say "hello world"
System.out.println("Hello, world");
A comment starts with what characters?
//
Section 2
(50 cards)
Declare a variable isACustomer suitable for representing a true or false value .
boolean isACustomer;
The character escape sequence to represent a single quote is: _________
\'
Declare and initialize the following variables : • monthOfYear , initialized to the value 11 • companyRevenue , initialized to the value 5666777 • firstClassTicketPrice , initialized to the value 6000 • totalPopulation , initialized to the value 1222333
int monthOfYear = 11; long companyRevenue = 5666777; long firstClassTicketPrice = 6000; long totalPopulation = 1222333;
Write a literal corresponding to the floating point value one-and-a-half.
1.5f
The character escape sequence to force the cursor to advance forward to the next tab setting is: ____________
\t
Assume that children is an integer variable containing the number of children in a community and that families is an integer variable containing the number of families in the same community. Write an expression whose value is the average number of children per family.
(double) children/families
Declare an integer constant , MONTHS_IN_YEAR , whose value is 12 .
Final int MONTH_IN_YEAR = 12;
The character escape sequence to force the cursor to go to the next line is: _______________
Declare a constant MONTHS_IN_DECADE , whose value is the value of the constant MONTHS_IN_YEAR (already declared ) multiplied by 10 .
final int MONTHS_IN_DECADE = MONTHS_IN_YEAR * 10;
The dimensions (width and length) of room1 have been read into two variables : width1 and length1 . The dimensions of room2 have been read into two other variables : width2 and length2 . Write a single expression whose value is the total area of the two rooms.
(width1length1)+(width2length2)
Write an expression that computes the average of the values 12 and 40 .
(12+40) / 2
Write a literal representing the long integer value twelve billion.
12000000000L
You are given two double variables , already declared and assigned values , named totalWeight , containing the weight of a shipment, and weightOfBox , containing the weight of the box in which a product is shipped. Write an expression that calculates the net weight of the product .
totalWeight - weightOfBox
Assume that price is an integer variable whose value is the price (in US currency) in cents of an item. Assuming the item is paid for with a minimum amount of change and just single dollars, write an expression for the number of single dollars that would have to be paid.
price/100
The value of the expression 12%0 is A) 0 B) 12 C) undefined
C) undefined
Assume that price is an integer variable whose value is the price (in US currency) in cents of an item. Assuming the item is paid for with a minimum amount of change and just single dollars, write an expression for the amount of change (in cents) that would have to be paid.
price%100
Which token is a literal? A) 77 B) main C) int D) + E) salary
A) 77
Write a String constant that is the empty string .
""
Write a literal representing the integer value zero.
0
In mathematics, the Nth harmonic number is defined to be 1 + 1/2 + 1/3 + 1/4 + ... + 1/N. So, the first harmonic number is 1, the second is 1.5, the third is 1.83333... and so on. Assume that n is an integer variable whose value is some integer N greater than 1. Assume also that hn is adouble variable whose value is the Nth harmonic number. Write an expression whose value is the (N-1)th harmonic number.
hn - 1.0/(n*1)
Calculate the average (as a double ) of the values contained the integer variables num1, num2, num3 and assign that average to the double variable avg. Assume the variables num1, num2, and num3 have been declared and assigned values , and the variable avg declared .
avg = (double) (num1+num2+num3) / 3;
The quotient that results from dividing 23 by 5 is A) 4.6 B) 3 C) 4
C) 4
Declare a variable temperature and initialize it to 98.6 .
double temperature = 98.6;
Write a character literal representing a comma.
","
The remainder that results from dividing 30 by 10 is A) 0 B) 3 C) 300 D) 30
A) 0
Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. The length of all the smaller ones is the same and is stored in the variable small . Similarly, the length of all the larger ones is the same and is stored in thevariable large . Write a single expression whose value is the total area of this room. DO NOT any method invocations.
(small + large) * (small + large)
Write a hexadecimal integer literal representing the value fifteen.
0xF
The character escape sequence to represent a backslash is:
\\
The value of the expression 23%5 is A) 4 B) 3 C) 23 D) 1
B) 3
Declare two double variables , one named length with a value of 3.5 and the other named width with a value of 1.55 .
double length = 3.5, width = 1.55;
Given an integer variable drivingAge that has already been declared , write a statement that assigns the value 17 todrivingAge .
drivingAge = 17;
Given two integer variables distance and speed , write an expression that divides distance by speed using floating point arithmetic, i.e. afractional result should be produced.
(double) distance / speed
The character escape sequence to represent a double quote is:
\"
Write an expression that computes the sum of two variables verbalScore and mathScore (already declared and assigned values ).
verbalScore + mathScore
Write a long integer literal that has the value thirty-seven _______ .
37L
In mathematics, the Nth harmonic number is defined to be 1 + 1/2 + 1/3 + 1/4 + ... + 1/N. So, the first harmonic number is 1, the second is 1.5, the third is 1.83333... and so on. Assume that n is an integer variable whose value is some positive integer N. Assume also that hn is a variable whose value is the Nth harmonic number. Write an expression whose value is the (N+1)th harmonic number.
hn + 1.0/(n+1)
In mathematics, the Nth harmonic number is defined to be 1 + 1/2 + 1/3 + 1/4 + ... + 1/N. So, the first harmonic number is 1, the second is 1.5, the third is 1.83333... and so on. Write an expression whose value is the 8th harmonic number.
1.0 / 7.0 + 1.0 / 6.0 + 1.0 / 5.0 + 1.0 / 4.0 + 1.0 / 3.0 + 1.0 / 2.0 + 1 + 1.0/8.0
Write an expression that computes the difference of the variables endingTime and startingTime .
endingTime - startingTime
Assume that price is an integer variable whose value is the price (in US currency) in cents of an item. Write a statement that prints the value of price in the form "X dollars and Y cents" on a line by itself. So, if the value of price was 4321, your code would print "43 dollars and 21 cents". If the value was 501 it would print "5 dollars and 1 cents". If the value was 99 your code would print "0 dollars and 99 cents".
System.out.println(price/100 + " dollars and " + price%100 + " cents");
Write a literal corresponding to the value of the first 6 digits of PI ("three point one four one five nine").
3.14159
Declare a variable hasPassedTest , and initialize it to true .
A) boolean hasPassedTest = true;
Write an expression that computes the remainder of the variable principal when divided by the variable divisor . (Assume both are type int .)
principal % divisor
The % operator calculates A) a percentage B) a ratio C) the remainder D) the quotient
C) the remainder
Assume that an int variable x that has already been declared ,. Write an expression whose value is the last (rightmost) digit of x .
x%10
The value of the expression 35%7 is A) 0 B) 3 C) 5 D) 1
A) 0
Which token is NOT a keyword (language-determined identifier)? A) int B) sum C) double D) return E) char
B) sum
Declare an integer variable cardsInHand and initialize it to 13 .
Short cardsInHand = 13;
The remainder that results from dividing 23 by 5 is A) 4 B) 3 C) 23 D) 1
B) 3
Write a literal representing the largest character value
65525
Write a character literal representing the (upper case) letter A.
"A"
Section 3
(9 cards)