<s>
PMD	B-Language
is	O
an	O
open	O
source	O
static	O
source	O
code	O
analyzer	O
that	O
reports	O
on	O
issues	O
found	O
within	O
application	O
code	O
.	O
</s>
<s>
PMD	B-Language
includes	O
built-in	O
rule	O
sets	O
and	O
supports	O
the	O
ability	O
to	O
write	O
custom	O
rules	O
.	O
</s>
<s>
PMD	B-Language
does	O
not	O
report	O
compilation	O
errors	O
,	O
as	O
it	O
only	O
can	O
process	O
well-formed	O
source	O
files	O
.	O
</s>
<s>
Issues	O
reported	O
by	O
PMD	B-Language
are	O
rather	O
inefficient	O
code	O
,	O
or	O
bad	O
programming	O
habits	O
,	O
which	O
can	O
reduce	O
the	O
performance	O
and	O
maintainability	O
of	O
the	O
program	O
if	O
they	O
accumulate	O
.	O
</s>
<s>
It	O
can	O
analyze	O
files	O
written	O
in	O
Java	B-Language
,	O
JavaScript	B-Language
,	O
Apex	O
and	O
Visualforce	O
,	O
PLSQL	B-Language
,	O
Apache	B-Language
Velocity	I-Language
,	O
XML	O
,	O
and	O
XSL	O
.	O
</s>
<s>
While	O
PMD	B-Language
does	O
not	O
officially	O
stand	O
for	O
anything	O
,	O
several	O
retro	O
acronyms	O
have	O
been	O
suggested	O
,	O
including	O
for	O
instance	O
Programming	B-Language
Mistake	I-Language
Detector	I-Language
and	O
Project	O
Meets	O
Deadline	O
.	O
</s>
<s>
PMD	B-Language
is	O
able	O
to	O
detect	O
flaws	O
or	O
possible	O
flaws	O
in	O
source	O
code	O
,	O
like	O
:	O
</s>
<s>
PMD	B-Language
is	O
released	O
under	O
a	O
BSDish	O
license	O
while	O
parts	O
of	O
it	O
are	O
under	O
Apache	B-Application
License	I-Application
2.0	O
and	O
the	O
LGPL	B-Application
.	O
</s>
<s>
The	O
Copy/Paste	O
Detector	O
(	O
CPD	O
)	O
is	O
an	O
add-on	O
to	O
PMD	B-Language
that	O
uses	O
the	O
Rabin	B-Algorithm
–	I-Algorithm
Karp	I-Algorithm
string	I-Algorithm
search	I-Algorithm
algorithm	I-Algorithm
to	O
find	O
duplicated	O
code	O
.	O
</s>
<s>
Unlike	O
PMD	B-Language
,	O
CPD	O
works	O
with	O
a	O
broader	O
range	O
of	O
languages	O
including	O
Java	B-Language
,	O
JavaServer	B-Language
Pages	I-Language
(	O
JSP	O
)	O
,	O
C	B-Language
,	O
C++	B-Language
,	O
Fortran	B-Application
,	O
PHP	B-Application
,	O
and	O
C#	B-Application
code	O
.	O
</s>
<s>
PMD	B-Language
has	O
plugins	B-Application
for	O
JDeveloper	B-Language
,	O
Eclipse	B-Application
,	O
jEdit	B-Language
,	O
JBuilder	B-Application
,	O
Omnicore	O
's	O
CodeGuide	O
,	O
NetBeans/Sun	O
Studio	O
,	O
IntelliJ	B-Language
IDEA	I-Language
,	O
TextPad	B-Application
,	O
Maven	B-Language
,	O
Ant	B-Application
,	O
Gradle	B-Language
,	O
Gel	O
,	O
JCreator	B-Application
,	O
Hudson	B-Language
,	O
Jenkins	B-Language
,	O
SonarQube	B-Application
,	O
Visual	B-Language
Studio	I-Language
Code	I-Language
and	O
Emacs	B-Application
.	O
</s>
<s>
There	O
is	O
also	O
a	O
CLI	B-Application
version	O
.	O
</s>
<s>
Rutar	O
,	O
Almazan	O
,	O
Foster	O
(	O
2004	O
)	O
,	O
"	O
A	O
Comparison	O
of	O
Bug	O
Finding	O
Tools	O
for	O
Java	B-Language
"	O
.	O
</s>
