Column names getting lower-case in SELECT statements when issued via JDBC

Whenever you issue an SELECT command from JDBC (prepared statement) you end up with column X does not exist. And column X name is shown in lower-case  As I understand, PostgreSQL Server or PostgreSQL JDBC driver converts column names containing upper-case letters to lower-case? Is there an easy way to bypass this behaviour? (Channing column names is not an option).

Here's an example of crashing SELECT: "SELECT password, accessLevel, lastServer, userIP FROM accounts WHERE login=?"

You end up with 'column "accesslevel" does not exist'.

Thanks for help in advance.