Matching Excel's floating point in Java

Question

I have an .xlsx spreadsheet with a single number in the top-left cell of sheet 1.

The Excel UI displays:

-130.98999999999

This is v

Answer 1

Unfortunately, this is not the same number the user can see in Excel. Can anyone point me to an algorithm to obtain the same number the user sees in Excel?

I don't think that it is using an algorithm here. Excel uses IEEE754 double internally and I'd guess that it is just using a printf style format when displaying the number:

$ python -c 'print "%.14g" % -130.98999999999069' 
-130.98999999999

$ python -c 'print "%.14g" % -130.9899999999907' 
-130.98999999999