how can i adjust letter spacing

[cool3690]

HI I use jsp+jasperreport5.5

I have a colume 

I hope if I just have 5 letters

it can have large spacing like this 

ex:  H   E   L   L   O

and if my word is long 

my letter spacing would small like this

ex: elephant

I also try add space in my sql colume like

h   e   l   l   o

but when I  convert to pdf the space disappear.......

how I can set up ?

thanks