question

A byte is a collection of:

answer

Eight bits

question

A computer program is

answer

a set of instructions that enable the computer to solve a problem or perform a task

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A program is a sequence of instructions stored in:

answer

The computer's memory

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A runtime error is usually the result of:

answer

A logical error.

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Another term for programs is:

answer

software

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Application software refers to:

answer

The programs that make the computer useful to the user.

question

An operating system can be categorized according to

answer

both of these: The number of users they can accommodate. The number of tasks they can perform at one time.

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Because Java byte code is the same on all computers, compiled Java programs

answer

are highly portable.

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Byte code instructions are

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read and interpreted by the JVM

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Computer programming is

answer

both of these An art. A science.

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Each different type of CPU has its own

answer

machine language

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Java was developed by

answer

Sun Microsystems

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Key words are

answer

words that have a special meaning in the programming language

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RAM is usually

answer

a volatile type of memory, used only for temporary storage

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Software refers to

answer

programs

question

Suppose you are at an operating system command line, and you are going to use the following command to compile a program: javac MyClass.java Before entering the command, you must

answer

Make sure you are in the same directory or folder where MyClass.java is located

question

Syntax is

answer

Rules that must be followed when writing a program.

question

The computer can do such a wide variety of tasks because

answer

it can be programmed

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The major components of a typical computer system consist of

answer

All of these: The CPU. Input/output devices. Main memory. Secondary storage devices.

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The purpose of validating the results of the program is

answer

to determine whether the program solves the original problem

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A Java program must have at least one of these

answer

Class definition

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A Java program will not compile unless it contains the correct line numbers...

answer

False

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A variable's scope is the part of the program that has access to the variable.

answer

True

question

All Java statements end with semicolons

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False

question

Although the dollar sign is a legal identifier character, you should not use it because it is normally used for special purposes.

answer

True

question

Assuming that pay has been declared a double, the following statement is valid..pay = 2,583.44;

answer

False

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Character literals are enclosed in ________; string literals are enclosed in ________.

answer

single quotes; double quotes

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Every Java application program must have

answer

A method named main.

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Given the declaration double r;, which of the following statements is invalid?

answer

r = 2.9X106

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If the compiler encounters a statement that uses a variable before the variable is declared, an error will result

answer

True

question

If the following Java statements are executed, what will be displayed? System.out.println("The top three winners aren"); System.out.print("Jody, the Giantn"); System.out.print("Buffy, the Barbarian"); System.out.println("Adelle, the Alligator");

answer

The top three winners are Jody, the Giant Buffy, the BarbarianAdelle, the Alligator

question

If x has been declared an int, which of the following statements is invalid?

answer

x = 1,000

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In Java the variable named total is the same as the variable named Total.

answer

False

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In Java, ________ must be declared before they can be used.

answer

Variables

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In Java, it is standard practice to capitalize the first letter of

answer

Class names

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In the following Java statement what value is stored in the variable name? String name = "John Doe";

answer

The memory address where "John Doe" is located

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Java is a case-insensitive language.

answer

False

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Named constants are initialized with a value, that value cannot be changed during the execution of the program.

answer

True

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The term ________ typically refers to the device that displays console output.

answer

Standard output device

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The boolean data type may contain values in the following range of values

answer

true or false

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A Boolean expression is one that is either

answer

either true or false

question

A block of code is enclosed in a set of:

answer

braces { }

question

If chr is a character variable, which of the following if statements is written correctly?

answer

if (chr == 'a')

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In an if/else statement, if the boolean expression is false,

answer

the statement or block following the else is executed

question

In a switch statement, each of the case values must be unique.

answer

True

question

The ________ statement is used to make simple decisions in Java.

answer

if

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The expression tested by an if statement must evaluate to:

answer

true or false

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The if/else statement will execute one group of statements if its boolean expression is true or another group if its boolean expression is false.

answer

True

question

The switch statement is a:

answer

Multiple alternative decision structure

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This type of operator determines whether a specific relationship exists between two values

answer

Relational

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What is the value of x after the following code has been executed? int x = 75; int y = 90; if (x ! = y) x += y;

answer

165

question

What will be the value of ans after the following code has been executed? int x = 10; int y = 65; if (x > = y) ans = x + y;

answer

120

question

What will be the value of bonus after the following code is executed? int bonus, sales = 10000 ; if (sales < 5000) bonus = 200; else if (sales < 7500) bonus = 500; else if (sales < 10000) bonus = 750; else if (sales < 20000) bonus = 1000; else bonus = 1250;

answer

1000

question

What will be the value of x after the following code is executed? int x = 75; int y = 60; if (x > y) x = x - y;

answer

15

question

What will be the values of ans, x, and y after the following statements are executed? int ans = 35, x = 50, y = 50; if (x >= y) { ans = x + 10; x -= y; } else { ans = y + 10; y += x; }

answer

ans = 60, x = 0, y = 50

question

What would be the value of discountRate after the following statements are executed?

answer

0.0

question

What would be the value of x after the following statements were executed? int x = 10; switch (x) { case 10: x += 15; case 12: x -= 5; break; default : x *= 3; }

answer

20

question

Which of the following expressions will determine whether x is less than or equal to y?

answer

x <= y

question

Which of the following is the correct boolean expression to test for: int x being a value between, but not including, 500 and 650, or int y not equal to 1000?

answer

((x > 500 && x < 650) || (y != 1000))

question

Which one of the following is the not equal operator?

answer

!=

question

A loop that repeats a specific number of times is known as a(n):

answer

count-controlled loop

question

A for loop normally performs which of these steps?

answer

all of the above

question

Before entering a loop to compute a running total, the program should first do this.

answer

Set the accumulator where the total will be kept to an initial value, usually zero

question

Each repetition of a loop is known as what?

answer

An iteration

question

How many times will the following do-while loop be executed? int x = 11; do { x += 20; } while (x > 1000);

answer

1

question

How many times will the following do-while loop be executed? int x = 11; do { x += 20; } while (x <= 1000);

answer

5

question

How many times will the following for loop be executed? for(int count=10; count<21; count++) System.out.println("Java is great!!!");

answer

11

question

If a loop does not contain within itself a way to terminate, it is called a(n):

answer

Infinite loop.

question

In a for statement, the control variable can only be incremented

answer

False

question

The do-while loop must be terminated with a semicolon

answer

True

question

The while loop has two important parts: (1) a boolean expression that is tested for a true or false value, and (2) a statement or block of statements that is repeated as long as the expression is true.

answer

True

question

This is a control structure that causes a statement or group of statements to repeat

answer

loop

question

This type of loop is ideal in situations where the exact number of iterations is known.

answer

for loop

question

This type of loop is ideal in situations where you always want the loop to iterate at least once.

answer

do-while loop

question

This type of loop will always be executed at least once.

answer

Post-test loop

question

What will be printed after the following code is executed? for (int number = 5; number <= 15; number +=3 System.out.print (number + ", ");

answer

5, 8, 11, 14,

question

What will be the value of x after the following code is executed? int x = 10, y = 20; while ( y < 100) { x += y; }

answer

This is an infinite loop.

question

When the break statement is encountered in a loop, all the statements in the body of the loop that appear after it are ignored, and the loop prepares for the next iteration.

answer

False

question

When the continue statement is encountered in a loop, all the statements in the body of the loop that appear after it are ignored, and the loop prepares for the next iteration

answer

True

question

Which of the following are pre-test loops?

answer

while, for

question

A parameter variable's scope is

answer

The method in which the parameter is declared.

question

A special variable that holds a value being passed into a method is called what?

answer

Parameter

question

Breaking a program down into small manageable methods:

answer

All of these.

question

If method A calls method B, and method B calls method C, and method C calls method D, when method D finishes, what happens?

answer

Control is returned to method C

question

If you attempt to use a local variable before it has been given a value:

answer

a compiler error will occur.

question

In a general sense, a method is

answer

A collection of statements that performs a specific task

question

Local variables

answer

All of these.

question

Methods are commonly used to break a problem into small manageable pieces

answer

True

question

The header of a value-returning method must specify this.

answer

The data type of the return value

question

The lifetime of a method's local variable is:

answer

Only while the method is executing.

question

The process of breaking a problem down into smaller pieces is sometimes called

answer

Divide and conquer.

question

This part of a method is a collection of statements that are performed when the method is executed.

answer

Method body

question

Two general categories of methods are void methods and value returning methods.

answer

True

question

Values that are sent into a method are called ________.

answer

arguments

question

What will be returned from the following method? public static int methodA() { double a = 8.5 + 9.5; return a ; }

answer

This is an error.

question

When an argument is passed to a method,

answer

Its value is copied into the method's parameter variable.

question

When an object, such as a String, is passed as an argument, it is:

answer

Actually a reference to the object that is passed.

question

When you pass an argument to a method, be sure that the argument's data type is compatible with:

answer

The parameter variable's data type.

question

Which of the following would be a valid method call for the following method? public static void showProduct (int num1, double num2) { int product; product = num1 * (int) num2; System.out.println("The product is " + product); }

answer

showProduct(10, 4.5);

question

You should always document a method by writing comments that appear:

answer

Just before the method's definition.

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