Study

Question 1

Variable

Answer 1

Placeholder for a value that behaves as the value it contains.

Question 2

Data Types

Answer 2

data type size primitive value
boolean 1 bit primitive true or false
byte 1 byte primitive -128 to 127
short 2 bytes primitive -32,768 to 32,767
int 4 bytes primitive -2 billion to 2 billion
long 8 bytes primitive -9 quintillion to quintil

float 4 bytes primitive up to 6-7 digits decimal
double 8 bytes primitive up to 15 digits decimal

char 2 bytes primitive single character/letter
String varies reference sequence of characters