data types in java

Question 1

int (whole numbers)

Answer 1

integer only holds values of neg + pos whole numbers

Question 2

double (real numbers 6.2)

Answer 2

decimals
pos + neg nums
can hold whole nums but main use fractional values

Question 3

boolean (true / false)

Answer 3

evaluate true false conditions

Question 4

flaost (real numbers)

Answer 4

similar to doubles
hold values of better precision
stores these differently.

Question 5

long (long ints)

Answer 5

big int values

Question 6

chars (characters - b)

Answer 6

hold single characters

Question 7

string (“hello world”)

Answer 7

non primitive

collection of characters

Question 8

variables

Answer 8

uses CamelCase (naming convention)
does not need to be declared with a value) 
store + manipulate data (can be changed while program runs)

Question 9

constant

Answer 9

uses ALL_CAPITALS as a naming convention
uses final keyword in java
needs value (cannot be changed)

Question 10

both

Answer 10

identifier/name 
associated with a particular memory location 
cannot be called 
reserve words 
have spaces
case sensitive

Question 11

procedure

Answer 11

• named identifier
• performs a task
• returns no value

Question 12

function

Answer 12

• named identifier
• performs a task
• returns a single value based on return type

Question 13

parameter

Answer 13

• named identifier
• allows data to be inputted into a procedure or function
• has a data type
• referenced in code and substituted with the value