Difference between JDBC Driver type numbers

I noticed that JDBC has different Drivers like:

1. Type 1 Driver
2. Type 2 Driver etc.. to Type 4

Why did they get the name like Type 1, Type 2 etc.? Is there any logic?

The type number tells something about how the driver actually communicates with the database.

1. Via ODBC API.
2. Via DB vendor specific API (using JNI calls on e.g. a DLL file in Windows).
3. Via generic network protocol (using sockets with e.g. TCP/IP protocol).
4. Via DB vendor specific network protocol (still with sockets).

In general (just by coincidence), how higher the type number, how better the JDBC driver performs.