How to write number cell using xlsx workbook

[Ratnachary]

First of all i would like to thank you for this code base provided for huge excel writing in java.
I want to write a cell with number(integer,float,double)value as ,while we are writing the number into string in the excel it is showing some warnings.

I think in xml writer class or sharedstringtext class should be modified for this.

Kindly give me the solution for this problem