<s>
Kaffe	B-Language
is	O
a	O
discontinued	O
"	O
clean	O
room	O
design	O
"	O
(	O
reverse	O
engineering	O
)	O
version	O
of	O
a	O
Java	B-Language
Virtual	I-Language
Machine	I-Language
.	O
</s>
<s>
It	O
comes	O
with	O
a	O
subset	O
of	O
the	O
Java	B-Language
Platform	I-Language
,	I-Language
Standard	I-Language
Edition	I-Language
(	O
Java	B-Language
SE	I-Language
)	O
,	O
Java	B-Language
API	I-Language
,	O
and	O
tools	O
needed	O
to	O
provide	O
a	O
Java	B-Language
runtime	I-Language
environment	O
.	O
</s>
<s>
Like	O
most	O
other	O
Free	O
Java	B-Language
virtual	I-Language
machines	I-Language
,	O
Kaffe	B-Language
uses	O
GNU	B-Language
Classpath	I-Language
as	O
its	O
class	B-Library
library	I-Library
.	O
</s>
<s>
Kaffe	B-Language
,	O
first	O
released	O
in	O
1996	O
,	O
was	O
the	O
original	O
open-source	O
Java	B-Device
implementation	O
.	O
</s>
<s>
Initially	O
developed	O
as	O
part	O
of	O
another	O
project	O
,	O
it	O
grew	O
so	O
popular	O
that	O
developers	B-Application
Tim	O
Wilkinson	O
and	O
Peter	O
Mehlitz	O
founded	O
Transvirtual	O
Technologies	O
,	O
Inc	O
.	O
with	O
Kaffe	B-Language
as	O
the	O
company	O
's	O
flagship	O
product	O
.	O
</s>
<s>
In	O
July	O
1998	O
,	O
Transvirtual	O
released	O
Kaffe	B-Language
OpenVM	O
under	O
a	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
Kaffe	B-Language
is	O
a	O
lean	O
and	O
portable	O
virtual	B-Architecture
machine	I-Architecture
,	O
although	O
it	O
is	O
significantly	O
slower	O
than	O
commercial	O
implementations	O
.	O
</s>
<s>
When	O
compared	O
to	O
the	O
reference	O
implementation	O
of	O
the	O
Java	B-Language
Virtual	I-Language
Machine	I-Language
written	O
by	O
Sun	O
Microsystems	O
,	O
Kaffe	B-Language
is	O
significantly	O
smaller	O
;	O
it	O
thus	O
appeals	O
to	O
embedded	B-Architecture
system	I-Architecture
developers	B-Application
.	O
</s>
<s>
It	O
comes	O
with	O
just-in-time	O
compilers	B-Language
for	O
many	O
of	O
the	O
CPU	B-General_Concept
architectures	I-General_Concept
,	O
and	O
has	O
been	O
ported	O
to	O
more	O
than	O
70	O
system	B-Device
platforms	I-Device
in	O
total	O
.	O
</s>
<s>
It	O
runs	O
on	O
devices	O
ranging	O
from	O
embedded	B-Architecture
SuperH	O
devices	O
to	O
IBM	O
zSeries	O
mainframe	B-Architecture
computers	I-Architecture
,	O
and	O
it	O
will	O
even	O
run	O
on	O
a	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
Unlike	O
other	O
implementations	O
,	O
in	O
the	O
past	O
Kaffe	B-Language
used	O
GNU	B-Application
Multi-Precision	I-Application
Library	I-Application
(	O
GMP	B-Application
)	O
to	O
support	O
arbitrary	O
precision	O
arithmetics	O
.	O
</s>
<s>
This	O
feature	O
has	O
been	O
removed	O
from	O
release	O
1.1.9	O
,	O
causing	O
protests	O
from	O
people	O
that	O
claim	O
they	O
used	O
Kaffe	B-Language
for	O
the	O
sole	O
reason	O
GMP	B-Application
arithmetic	O
being	O
faster	O
than	O
the	O
typical	O
pure	O
java	B-Device
implementation	O
,	O
available	O
in	O
other	O
distributions	O
.	O
</s>
<s>
The	O
capability	O
was	O
removed	O
to	O
reduce	O
the	O
maintenance	O
work	O
,	O
expecting	O
that	O
interested	O
people	O
will	O
integrate	O
GMP	B-Application
support	O
into	O
GNU	B-Language
Classpath	I-Language
or	O
OpenJDK	B-Language
.	O
</s>
<s>
Subsequently	O
GNU	B-Language
Classpath	I-Language
introduced	O
GMP	B-Application
support	O
in	O
version	O
0.98	O
.	O
</s>
