<s>
Checkstyle	B-Application
is	O
a	O
static	O
code	O
analysis	O
tool	O
used	O
in	O
software	O
development	O
for	O
checking	O
if	O
Java	B-Language
source	I-Language
code	I-Language
is	O
compliant	O
with	O
specified	O
coding	B-Language
rules	I-Language
.	O
</s>
<s>
The	O
current	O
stable	O
release	O
is	O
version	O
10.5.0	O
which	O
supports	O
Java	B-Language
versions	O
from	O
11	O
to	O
17	O
.	O
</s>
<s>
The	O
programming	B-Language
style	I-Language
adopted	O
by	O
a	O
software	O
development	O
project	O
can	O
help	O
to	O
ensure	O
that	O
the	O
code	O
is	O
compliant	O
with	O
good	O
programming	O
practices	O
which	O
improve	O
the	O
quality	O
,	O
readability	O
,	O
and	O
re-usability	O
of	O
the	O
code	O
and	O
may	O
reduce	O
the	O
cost	O
of	O
development	O
.	O
</s>
<s>
The	O
checks	O
performed	O
by	O
Checkstyle	B-Application
are	O
mainly	O
limited	O
to	O
the	O
presentation	O
of	O
the	O
code	O
.	O
</s>
<s>
Checkstyle	B-Application
rules	O
are	O
not	O
programming	B-Language
style	I-Language
,	O
they	O
are	O
merely	O
rules	O
for	O
formatting	O
the	O
code	O
.	O
</s>
<s>
Checkstyle	B-Application
defines	O
a	O
set	O
of	O
available	O
modules	O
,	O
each	O
of	O
which	O
provides	O
rules	O
checking	O
with	O
a	O
configurable	O
level	O
of	O
strictness	O
(	O
mandatory	O
,	O
optional	O
...	O
)	O
.	O
</s>
<s>
For	O
example	O
,	O
Checkstyle	B-Application
can	O
examine	O
the	O
following	O
:	O
</s>
<s>
Javadoc	B-Language
comments	O
for	O
classes	O
,	O
attributes	O
and	O
methods	O
;	O
</s>
<s>
Checkstyle	B-Application
is	O
available	O
as	O
a	O
JAR	B-Language
file	I-Language
which	O
can	O
run	O
inside	O
a	O
Java	B-Language
VM	I-Language
or	O
as	O
an	O
Apache	B-Application
Ant	I-Application
task	O
.	O
</s>
<s>
It	O
can	O
also	O
be	O
integrated	O
into	O
an	O
IDE	B-Application
or	O
other	O
tools	O
.	O
</s>
