ResultSet not responding to next() method

Question

Please Help i have this result set object that is not null sure of it because i checked by using if(reslt!=null) then i used a while loop to go through the object but to no avail i even debuged by using System.out.println(). Help !!.
[if(evnt.getSource()==okBtn){
               ResultSet resltset=null;
               try{
                    DataBaseConnecter dataBaseConnecter=new DataBaseConnecter();
                    resltset =dataBaseConnecter.executeQuery(query);
                    if(resltset!=null&&resltset.next()){
                         System.out.println("Iam not null");
                         while(resltset.next()){
                              System.out.println("I got here ");
                              String sdr=resltset.getString(1);
               }catch(SQLException sqlex){
                    sqlex.printStackTrace();
               catch(NullPointerException npe){
                    npe.printStackTrace();
               }]

Answer 1

if(evnt.getSource()==okBtn){
ResultSet resltset=null;
try{
DataBaseConnecter dataBaseConnecter=new DataBaseConnecter();
resltset =dataBaseConnecter.executeQuery(query);
if(resltset!=null&&resltset.next()){
System.out.println("Iam not null");
while(resltset.next()){
System.out.println("I got here ");
String sdr=resltset.getString(1);
}catch(SQLException sqlex){
sqlex.printStackTrace();
catch(NullPointerException npe){
npe.printStackTrace();
}One big problem with this statement is that you are not testing to see if a resultset was returned, you are just confirming that the reference variable resltset points to an object in memory, as it should.
if(resltset!=null&&resltset.next()){
A better statement would be,
if (resltset.first()) {
... because if this method returns true then you are moved automatically to the first row, and if it returns false then the ResultSet object is empty and you skip the code block.
Also, you are getting the TYPE_FORWARD exception because the ResultSet is set to TYPE_FORWARD only.