2 data types vars and control strucs

data type

size and type of values a variable can hold

byte

short

int

long

primitive data types 1

float

double

char

boolean

primitive data types 2

string

arrays

classes and interfaces

non primitive data types

string

used to store a sequence of characters (text) enclosed in double quotes

arrays

used to store multiple values of the same type in a single variable. fixed size

classes and interfaces

user defined types that allow you to create custom objects with properties and methods

if statement

if else statement

if-else if-else

switch statement

conditional control structures

if statement

executes a block of code only if a specified condition is true

if-else statement

executes one block if the condition is true and a different block if false

if-else if-else

checks condition sequentially, executing the first condition

switch statement

selects one of many code blocks to execute, alternative to long if chains

while loop

do-while loop

for loop

for-each loop

types of loops

while loop

execute as long as condition is true

do-while loop

execute once at least. loop continues as long as condition is true

for loop

repeat a code a specific number of times

for-each loop

iterate through every item