Data types are used to represent type of the variable & expressions. Representing how much memory is allocated for variable. Specifies range value of the variable.
There are 8 primitive data types in java
Data Type
size(in bytes)
Range
default values
byte
1
-128 to 127
0
short
2
-32768
0
int
4
-2147483648 to 2147483647
0
long
8
9,223,372,036,854,775,808 to 9 ,223,372,036,854,775,807
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