<s>
Pluggable	B-Language
look	I-Language
and	I-Language
feel	I-Language
is	O
a	O
mechanism	O
used	O
in	O
the	O
Java	B-Language
Swing	I-Language
widget	B-Library
toolkit	I-Library
allowing	O
to	O
change	O
the	O
look	B-Application
and	I-Application
feel	I-Application
of	O
the	O
graphical	B-Application
user	I-Application
interface	I-Application
at	O
runtime	O
.	O
</s>
<s>
Swing	B-Language
allows	O
an	O
application	O
to	O
specialize	O
the	O
look	B-Application
and	I-Application
feel	I-Application
of	O
widgets	O
by	O
modifying	O
the	O
default	O
(	O
via	O
runtime	O
parameters	O
)	O
,	O
deriving	O
from	O
an	O
existing	O
one	O
,	O
by	O
creating	O
one	O
from	O
scratch	O
,	O
or	O
,	O
beginning	O
with	O
J2SE	O
5.0	O
,	O
by	O
using	O
the	O
skinnable	B-Application
synth	B-Language
look	I-Language
and	I-Language
feel	I-Language
,	O
which	O
is	O
configured	O
with	O
an	O
XML	B-Protocol
property	O
file	O
.	O
</s>
<s>
The	O
look	B-Application
and	I-Application
feel	I-Application
can	O
be	O
changed	O
at	O
runtime	O
.	O
</s>
<s>
The	O
corresponding	O
API	B-Application
includes	O
:	O
</s>
<s>
Hooks	O
in	O
Swing	B-Language
widgets	O
to	O
interact	O
with	O
their	O
look	B-Application
and	I-Application
feel	I-Application
.	O
</s>
<s>
Each	O
widget	O
defined	O
in	O
Swing	B-Language
can	O
delegate	O
its	O
"	O
painting	O
"	O
to	O
its	O
associated	O
user	B-Application
interface	I-Application
classes	O
called	O
UI	O
delegates	O
.	O
</s>
<s>
An	O
API	B-Application
to	O
manage	O
existing	O
look-and-feel	B-Application
definitions	O
.	O
</s>
<s>
This	O
API	B-Application
allow	O
to	O
set	O
the	O
look	B-Application
and	I-Application
feel	I-Application
or	O
switch	O
from	O
look	B-Application
and	I-Application
feels	I-Application
at	O
runtime	O
.	O
</s>
<s>
Another	O
API	B-Application
to	O
define	O
a	O
specific	O
look	B-Application
and	I-Application
feel	I-Application
,	O
or	O
derive	O
a	O
look	B-Application
and	I-Application
feel	I-Application
from	O
an	O
existing	O
one	O
.	O
</s>
<s>
The	O
Java	B-Device
platform	I-Device
comes	O
with	O
several	O
bundled	O
look	B-Application
and	I-Application
feels	I-Application
:	O
</s>
<s>
A	O
default	O
cross-platform	B-Operating_System
look	B-Application
and	I-Application
feel	I-Application
,	O
called	O
Metal	O
(	O
see	O
)	O
.	O
</s>
<s>
This	O
look	B-Application
and	I-Application
feel	I-Application
comes	O
with	O
several	O
themes	B-Application
:	O
</s>
<s>
The	O
,	O
which	O
was	O
historically	O
the	O
first	O
Swing	B-Language
default	O
theme	O
.	O
</s>
<s>
The	O
smoother	O
,	O
which	O
became	O
the	O
default	O
theme	O
for	O
Java	B-Device
5.0	O
.	O
</s>
<s>
Other	O
cross-platform	B-Operating_System
look	B-Application
and	I-Application
feels	I-Application
:	O
</s>
<s>
A	O
skinnable	B-Application
look	B-Application
and	I-Application
feel	I-Application
called	O
synth	B-Language
(	O
see	O
)	O
,	O
which	O
is	O
configured	O
with	O
an	O
XML	B-Protocol
property	O
file	O
.	O
</s>
<s>
The	O
look	B-Application
and	I-Application
feel	I-Application
(	O
based	O
on	O
synth	B-Language
)	O
,	O
which	O
is	O
added	O
for	O
the	O
Java	B-Device
SE	O
6	O
Update	O
10	O
.	O
</s>
<s>
Platform-dependent	O
look	B-Application
and	I-Application
feels	I-Application
:	O
Look	B-Application
and	I-Application
feels	I-Application
that	O
aim	O
to	O
be	O
the	O
closest	O
as	O
possible	O
to	O
the	O
platform	O
native	O
GUI	B-Application
.	O
</s>
<s>
A	O
Windows	B-Application
look	B-Application
and	I-Application
feel	I-Application
(	O
this	O
look	B-Application
and	I-Application
feel	I-Application
depends	O
on	O
the	O
version	O
of	O
the	O
Windows	B-Application
Operating	I-Application
System	I-Application
)	O
,	O
</s>
<s>
A	O
Motif	B-Application
or	O
GTK+	B-Application
(	O
for	O
newer	O
distributions	O
)	O
look	B-Application
and	I-Application
feel	I-Application
on	O
Linux	B-Application
or	O
Solaris	B-Application
,	O
</s>
<s>
A	O
specific	O
vendor	O
look	B-Application
and	I-Application
feel	I-Application
for	O
IBM	B-Application
AIX	I-Application
,	O
HP-UX	B-Application
,	O
and	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
Numerous	O
other	O
look	B-Application
and	I-Application
feels	I-Application
have	O
been	O
developed	O
by	O
third	O
parties	O
,	O
such	O
as	O
:	O
</s>
