Problems in accessing a remote database

I want to access an MS ACCESS database located at an "IP".
for this purpose i used the URL
String url = "jdbc:odbc:@127.0.0.1:80:eDatt";
here eDatt is the name of database. and it is a system DSN.
but when i run the program i found the following error.
Unable to connect
java.sql.SQLException: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
     at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6031)
     at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:6188)
     at sun.jdbc.odbc.JdbcOdbc.SQLDriverConnect(JdbcOdbc.java:2458)
     at sun.jdbc.odbc.JdbcOdbcConnection.initialize(JdbcOdbcConnection.java:320)
     at sun.jdbc.odbc.JdbcOdbcDriver.connect(JdbcOdbcDriver.java:163)
     at java.sql.DriverManager.getConnection(DriverManager.java:517)
     at java.sql.DriverManager.getConnection(DriverManager.java:177)
     at eDattDatabaseHandler.<init>(eDattDatabaseHandler.java:27)
     at eDattDatabaseHandler.main(eDattDatabaseHandler.java:196)Connectiobn is SuccessfUL
java.lang.NullPointerException
     at eDattDatabaseHandler.logOn(eDattDatabaseHandler.java:109)
     at eDattDatabaseHandler.main(eDattDatabaseHandler.java:205)
Exception in thread "main"

Does this work, String url = "jdbc:odbc:eDatt"; ?

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    Before running sql developer i install the oracle instant client and sql plus, i use the same tnsnames.ora file as my windows machine and sqlplus (in snow leopard) connect perfect.
    i set the path of my tnsnames in the setup of sql developer but i can't do it work.
    Anyone can help me please? thanks a lot.

    Duplicate thread Problem running Sql developer in Mac OSX Snow Leopard.

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