<s>
ExtenXLS	B-Language
is	O
a	O
Java	B-Language
Excel	B-Application
Reporting	O
Toolkit	O
developed	O
by	O
Extentech	O
.	O
</s>
<s>
It	O
is	O
a	O
Reporting	O
API	B-General_Concept
that	O
allows	O
for	O
the	O
reading	O
in	O
,	O
modifying	O
and	O
creation	O
of	O
spreadsheet-based	O
reports	O
from	O
Java	B-Language
applications	O
.	O
</s>
<s>
Written	O
entirely	O
in	O
the	O
Java	B-Language
programming	I-Language
language	I-Language
,	O
ExtenXLS	B-Language
creates	O
new	O
spreadsheet	B-Application
files	O
from	O
scratch	O
as	O
well	O
as	O
from	O
existing	O
spreadsheet	B-Application
files	O
templates	O
.	O
</s>
<s>
ExtenXLS	B-Language
has	O
the	O
ability	O
to	O
utilize	O
data	O
from	O
any	O
source	O
and	O
output	O
it	O
in	O
Excel-compatible	O
XLS	B-Application
,	O
XML	B-Protocol
,	O
and	O
HTML	B-Language
formats	O
.	O
</s>
<s>
Common	O
uses	O
range	O
from	O
a	O
Java	B-Application
Servlet	I-Application
that	O
produces	O
financial	O
analysis	O
reports	O
to	O
JavaBeans	O
embedded	O
in	O
JavaServer	B-Language
Pages	I-Language
for	O
use	O
in	O
executing	O
formula	O
calculations	O
.	O
</s>
<s>
The	O
ExtenXLS	B-Language
API	B-General_Concept
can	O
be	O
used	O
as	O
a	O
desktop	O
spreadsheet	B-Application
component	O
or	O
embedded	O
in	O
a	O
server	O
application	O
.	O
</s>
<s>
With	O
the	O
ability	O
to	O
reuse	O
existing	O
spreadsheets	B-Application
,	O
ExtenXLS	B-Language
can	O
update	O
template	O
XLS	B-Application
files	O
with	O
fresh	O
data	O
from	O
databases	O
and	O
output	O
to	O
custom	O
reports	O
.	O
</s>
<s>
It	O
has	O
an	O
Excel	B-Application
compatibility	O
,	O
template	O
input	O
files	O
can	O
range	O
from	O
a	O
variety	O
of	O
complex	O
legacy	O
spreadsheets	B-Application
such	O
as	O
:	O
surveys	O
,	O
checklists	O
,	O
what-if	O
scenarios	O
,	O
and	O
historical	O
portfolio	O
data	O
.	O
</s>
<s>
ExtenXLS	B-Language
contains	O
methods	O
that	O
can	O
create	O
new	O
WorkBooks	O
from	O
scratch	O
,	O
allowing	O
for	O
the	O
insertion	O
of	O
new	O
cells	O
containing	O
text	O
,	O
and	O
numeric	O
data	O
.	O
</s>
<s>
Other	O
potential	O
uses	O
include	O
:	O
user	O
interfaces	O
built	O
with	O
the	O
included	O
Java	B-Language
Swing	I-Language
spreadsheet	B-Application
components	O
,	O
and	O
transformations	O
of	O
spreadsheets	B-Application
into	O
HTML	B-Language
,	O
and	O
XML	B-Protocol
.	O
</s>
