software development exam 1 review

what is the relationship between bytes?

1024

what is RAM?

a volatile form of storage that contains data and programs that are being used

what are storage devices?

a permanent form of storage

why is RAM important for programming?

it runs heavy integrated development environments, stores code and its variables, and multitasks

what is a program?

a specific set of ordered operations for a computer to perform

what is a machine language?

a computer’s native language, in the form of binary code

what is an assembly language?

uses a short descriptive word to represent each of the machine language instructions

what is a high-level language?

a platform independent, english-like, easy to learn and use program

why java?

it’s a poerful and general-purpose programming language

what are some important characteristics of java?

it’s object-oriented, portable, and interpreted

what is an integrated development environment?

a software application providing facilities for developing programs

what is an application programming interface? (API)

contains predefined classes and interfaces for developing programs

what is a class?

a building block in object-oriented programming

what is a method?

a block of code including a collection of statements to perform an operation

what are some java syntax rules?

every statement ends with “;”

what is a syntax error?

not following the rules of a programming language

what are some runtime errors?

causes the program to terminate abnormally

what are some logic errors?

program not working as intented

what is % in java?

the remainder

what is the order of precedence in java?

follows PEMDAS

what is a variable?

used to store values to be used later in a program

how do you import a scanner?

import java.util.Scanner;

Scanner input = new Scanner(System.in);

what is a boolean data type?

evaluates true or false — compares two values

what does the not (!) operator do?

reverses the value of the logical expression

what is the and operator represented by?

&&

what is the or operator represented by?

||

what does he min method return?

the minimum number of two numbers

what does the max method return?

the maximum number of two numbers

what does the abs method return?

the absolute value of the number

what does the random method return?

a random double value greater than or equal to 0 and less than 1

how do you use the random method?

a + Math.random() * b

why do we use repetition?

it helps us deal with the unknown, allows us to efficiently use variables, can input, add, and average multiple numbers using a limited value of variables

how do you write a while statement?

while (expression) {

//Loop body

statement(s);

}

what is an infinite loop?

continues to execute endlessly

what is a counter-controlled loop?

you know how many times the loop should execute

what is a sentinel-controlled loop?

you don’t know how many time the loop will execute, but you know the last value

what is a flag-controlled loop?

a boolean variable controls the loop

how do you write a for statement?

for (initial statement; loop condition; update statement) {

//Loop body

statement(s);

}

what are the for loop control statements?

initial statement, loop condition, and update statement

what is a nested control structure?

using a control structure within a control structure

what is a break in a loop?

immediate termination of the loop