Primitive Message Types: Google Protobuf

Below are the primitive Message Types and their meaning, as used in Google Protobuf.

S No.	Type	Java Mapping	Usage
1	double	double
2	float	float
3	int32	int	Variable length. Not good for negatives
4	int64	long	Variable length. Not good for negatives
5	uint32	int	Variable length
6	uint64	long	Variable length
7	sint32	int	Variable length. Better for Negatives
8	sint64	long	Variable length. Better for Negatives
9	fixed32	int	4 bytes
10	fixed64	long	8 bytes
11	sfixed32	int	4 bytes
12	sfixed64	long	8 bytes
13	bool	boolean
14	string	String
15	bytes	ByteString	Variable length