Help needed in logic problem

Question

HI,
I am trying to implement one marketing application, where the goods will be dispatched via some transportation. The receipt name is lr number or lrno. Some times for same lr no., 2-3 goods will be dispatched. Now, I am developing one application, if an user selects the from and to date from the web page, the web page should display all the lrno. Form date to to-date, its destination place and total amount, etc. These values are coming from backend.
Eg.
Trname      Lrno           dt          amt
BLR     LR300          1/2/05          1000
MUM     LR400          1/2/05          2000
MUM     LR400          1/2/05          100
MUM     LR400          1/2/05          200
DL     LR600          3/2/05          1000
My problem is if there are 2-3 goods for same lrno, the amounts should add up and final amount should come. Only in one record.(in one row). In the above example, for MUM 3 rows are there. So, the trname, lrno, dt shuld be same , but the total amount of all the three records should be added up and display.
Expected output
BLR     LR300          1/2/05          1000 as it is displayed
MUM     LR400          1/2/05          2300// it should display like this.
DL     LR600          3/2/05          1000 // as it displayed.
My output as follows: I cold add the amount, but, each time, the record is displayed. Like this
BLR     LR300          1/2/05          1000 //correct output
MUM     LR400          1/2/05          2000 //this should not display
MUM     LR400          1/2/05          2100 // this should not display
MUM     LR400          1/2/05          2300 //Only this record should be displayed.
DL     LR600          3/2/05          1000 //correct output
Code sample as follows:
<%
while(rs.next())
          trfamt=rs.getInt("cfrta");
          String carnam=rs.getString("ccara").trim();
          String lrdt=rs.getString("clrd").trim();
          String lrnum=rs.getString("clrn").trim();
          brk="y";
          cnt1=0;
          cnt=cnt+1;
          out.println("Counter="+cnt);
          if(cnt==1)
               subtot=trfamt;
               tmp=lrnum;
          }//end of if(cnt==1) cndition
          else
               if(lrnum.equals(tmp)) //compares whether two lrno are same or not.
                    brk="n";
                    subtot=subtot+trfamt; // if lrno are same, its amount is added up
                    //carnam1=carnam;
                    //lrnum1=lrnum;
                    System.out.println(lrnum+""+tmp+" "+"Lr numbers are same.totaling is continued");
                    tmp=lrnum;
                    cnt1=cnt1+1;
                    }//end of if     
               else
                    if(cnt1==0)
                         subtot=0; // if lrno are different, fresh totaling is done
                         subtot=trfamt;
                         System.out.println("Lr numbers are different.Fresh Totaling is done");
                         tmp=lrnum;
                         }//end of if(cnt1=0)condition
               }//end of else
               }//end of if(cnt==1)condition else part
     if((cnt==1)||(brk.equals("y"))||(cnt1>0))
                    {%>
                    <TABLE>
                    <TR>
                         <TD><%out.println("Carier Name="+carnam);%></TD>
                         <TD><%out.println("Lrnumber="+lrnum);%></TD>
                         <TD><%out.println("Amount="+subtot);%></TD>
                    </TR>
                    </TABLE>
                    <%}
     }//end of while condition %>          
How to correct this error ! please help me.
With regards,
AShvini

Answer 1

Thank you Ram.
I will try your code. ok, i took another look at it and dont see y it shouldnt
                        if(lrnum == mc.getLrNum())
              //if this has already been added, just update amount
              mc.addAmount(trfamt);
              dupRecord = true;
                                           break; //it would work correctly even without this, but y do unnecessary iterations if id found
,/code]
Since past 3 days, i am struggling with this bug. SO,
i asked for line by line compilation. As u said, i
tried to download IDE from www.ecllips.com, but,
stuckup somewhere. so, i gave up.
  don't give up, install eclipse (or any other ide), it would do wonders to ur development effort.
I will try with your code and get back to u.
   cool :-)
ram.