rounded brackets in prepared statement

Hi folks,

my setup: Java 1.6, JDBC PostgreSQL JDBC4 driver 9.1-903.

Why when I do:

PreparedStatement ps = myConnection.prepareStatement("SELECT a,b,c FROM mytable WHERE category ~ ?");
ps.setString(1, "my/super/category/a(bcdef");
result = ps.executeQuery();

I need to escape rounded bracket in setString in this way:
ps.setString(1, "super/category/a(bcdef".replaceAll("\\(", "\\\\(")));

I think it has somethink to do with regular expessions but ot know much more about it.

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With kind regards,

Ladislav DANKO