Question

How to look for the value whether it is null or not in JSP. E.g. in below I want to check the description column in pipe table for null values.

String Query1 = "SELECT description FROM pipe where pipe_id='" + id+"' and version_id=2";
SQLResult = SQLStatement.executeQuery(Query1);
SQLResult.first();
description = SQLResult.getString("description");
if(description=="")
{
    json_string=json_string+"&desc="+description;
    out.println("not null");
} else
{
    json_string=json_string;
    out.println("null");
}

Answer 1

Well: if (description != null && !description.isEmpty()) … however are you writing this code within a JSP ? That seems wrong. You should probably do this stuff within a servlet and pass the description as an request attribute to a jsp.