sorry I'm a real beginner here and have studied the docs,] books, and previous postings without success.

i am trying to use the mm jdbc driver with: v1.3 (1998-08-25) of Driver.java v9.13 (3.21.29a-gamma) of mysql for win95. jdk1.2 for win32.

mysql works fine by starting the mysqld and from the mysql console. my TCP works fine and I can ping localhost or 192.168.1.1, my IP.

then i installed the Driver.class etc under d:\jdk1.2\org\gjt\mm\mysql\ and wrote a simple java program to open the connection to my testdb:

... Connection conn = null; Class.forName("org.gjt.mm.mysql.Driver").newInstance(); Properties P = System.getProperties(); P.put("jdbc.drivers", "org.gjt.mm.mysql.Driver"); System.setProperties(P); conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/testdb"); ...etc

when i try to run it it gives me no SQLException, but rather a null pointer exception when i try to close the connection, with a stack trace that points to Exception in thread "main" java.lang.ClassFormatError: org/gjt/mm/mysql/Connection (Invalid start_pc/length in local var table)

(i think this refers to the Connection.class that mm supplies, and which is called by Driver, and which is labeled as not to be used by user.)

i tried adding null user and password fields to the getConnection string, and using the IP address and so on, as previously recommended, but it continues to give me the same error. please, any suggestions?

may i suggest that all this could use some better documentation, with more specific examples that work, and some clear pointers on installation?