Re: Path problem in a jar

Lew <>
Sat, 18 Aug 2007 11:41:05 -0400
Philippe Massicotte wrote:

I suggest this code should obtain an URL to the DB..
 // important to put the leading '/'!
 URL theDB = anObject.getClass().

Tx alot, it works for getting the ressource. Thus I have another problem to
run the jar.

URL theDB = this.getClass().getResource("/Data/Database/MyDatabase.mdb");
String g = theDB.getPath();
String myDB = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ= " +
conn = DriverManager.getConnection(myDB," ", " ");

When I run it form my IDE it works. But when running the jar (lets' suppose
the jar is in c:\) I get the following error.

C:\>java -jar ProLamp_fat.jar
java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver] Not a valid
e name.
        at sun.jdbc.odbc.JdbcOdbc.createSQLException(Unknown Source)
        at sun.jdbc.odbc.JdbcOdbc.standardError(Unknown Source)
        at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(Unknown Source)
        at sun.jdbc.odbc.JdbcOdbcConnection.initialize(Unknown Source)
        at sun.jdbc.odbc.JdbcOdbcDriver.connect(Unknown Source)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at database.BD.OpenDB(

Maybe its a problem with the manifest ? Here's mine :

You aren't going to be able to run the database directly from the JAR, that
is, the data cannot reside inside the JAR. They need to reside in the file

It'd be running the database from inside a ZIP file (more correctly a TAR
file, but that's the same for purposes of discourse). You'd constantly
rewrite the compressed file with every change to the database contents. Not
feasible. The JAR format isn't made for that.

You need the database to reside in an accessible file system.



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