iam facing problem

[ibm579]

my requirement is :

plz provide code for below


If dates are giving dynamically

suppose fromdate is:1/1/2010

ToDate is:31/3/2010



then the data from the system is in below format





s.no CUSTOMER NAME DATE AMOUNT

1. giri 1/1/2010 1000


2. giri 15/1/2010 1000

3. giri 15/2/2010 2000


4. giri 10/3/2010 3000


5. phani 1/1/2010 1000


6. phani 5/2/2010 2000



7. phani 16/3/2010 3000



8. nari 1/1/2010 1000


9. nari 10/1/2010 2000



10. nari 15/1/2010 3000
-------------------------------------


total 1900

-------------------------------------







Then the required format is:

header also should dynamically from the given dates.



s.no CUSTOMER NAME JAN FEB MAr TOTAL


1. giri 2000 2000 3000 7000



2. phani 1000 2000 3000 6000



3. nari 6000 0 0 6000


-------------------------------------------------------

TOTAL 19000


-------------------------------------------------------


actully it is having lot of data .after giving from date,to date the data will come

[ibm579]

requires pure core java code only.by using maps,lists