Question

I have following code

if (rs != null)
{
  out.println("result set has got something");
  while (rs.next())
  { 
    //I am processing result set now
  }
}
else
{
  out.println("result set is empty");
}

Even though rs is null it is printing “resultset has got something”. Why is it happening like that and how can I check for empty result set?

Answer 1

You could check it with:

if(rs != null && rs.next()) {
    out.println("result set has got something");
    do {
        // do what you have to do
    } while (rs.next());
} else {
    out.println("result set is empty");
}