There are four types of integer data variables.
They can store both negative and positive values.
Data TypeValueMemory
byte-128 -- +127occupy 1 byte (8 bits) in memory
short-32768 -- 32767occupy 2 bytes (16 bits) in memory
int-2147483648 -- 2147483647occupy 4 bytes (32 bits) in memory
long-9223372036854775808 -- 9223372036854775807occupy 8 bytes (64 bits) in memory