Android - SQLite - cursor.getString() doesn't work properly (ex: code postal = "01234" but return "1234" instead)

I'm working with Android - SQLite. I have code postal number stored as CHAR[5] in SQLite db.

Cursor cursor = db.query( ... )
String code = cursor.getString(cursor.getColumnIndex("code"));

However it always returns with deleting "0" begining character of code postal? (ex: code postal = "01234" but return "1234" instead) Can someone explains? Thanks.