create or replace and compile java source named my_user.LogReader as
public class LogReader {
public static void read_log(){
}
};

String sql = "create or replace and compile java source named my_user.LogReader as " +
                    "public class LogReader { " +
                    "public static void read_log(){ " +
                    "} };";
Statement stmt = connection.createStatement();
stmt.setEscapeProcessing(false);
return stmt.executeUpdate(sql);

java.sql.SQLException: ORA-00922: missing or invalid option