Runestone Full AP Comp Sci A Vocab

I FUCKING HATE CODING BUT WE BALL

Compiler

A program that translates source code written in a high-level programming language (Java in this case) into machine code that a computer can execute.

Compiler/Syntax Error

Definition: Compiler error happens during code translation to machine code.

Causes: Syntax, type errors, missing libraries, wrong function calls.

Impact: Stops program compilation or execution.

Examples: Missing semicolons, wrong parentheses, undeclared variables.

Resolution: Fix code based on error messages.

Main Method

Main Method: The entry point of a Java program where execution begins. It must be public, static, void, and accept an array of Strings as arguments.

Variable

A name associated with a memory location in the computer

Declaring a Variable

Specifying the type and name for a variable. This sets aside memory for a variable of that type and associates the name with that memory location

Initializing A Variable

Setting a value to a variable when it is first created in a program, typically done using an assignment statement.

Data type

defines the type of data a variable can hold, such as integer, string, or boolean. It helps in determining the operations that can be performed on the data.

Integer

A whole number that can be positive, negative, or zero. It does not include fractions or decimals. Examples include -3, 0, and 5.

Boolean

An expression that is either true or false

Camel Case

One way to create a variable name by appending several words together and uppercasing the first letter of each word after the first word

Casting a Variable

Converting a data type to another for operations, ensuring compatibility. E.g., changing an integer to a string for concatenation. This is done using (type) name.

Operator

Common mathematical symbols such as + and *

Compound assignment/Shortcut Operators

shorthand notations in programming that combine arithmetic operators with the assignment operator. They simplify code by operating and assignment in one step. E.g. x++ which means x = x + 1

Remainder

The % (mod) operator which returns the remainder from one number divided by another

Arithmetic Expression

A sequence of operands and operators that describer a calculation to be performed, for example 3 * (2+x)

Operator Precedence

Some operators are done before others, for example, *,/,% have precedence over + and -, unless parenthesis are used. Rules of PEMDAS apply

boolean(type)

used to declare a variable that can only have the value true or false

double / int / String (type)

used to declare a variable of types double, int, or String

System.out.print() / System.out.println()

you know what this fucking does you soggy bucket of unseasoned chips

=

Used for assignment to a variable

==

a comparison operator used to check if two values are equal in programming languages.