<s>
javac	B-General_Concept
(	O
pronounced	O
"	O
java-see	O
"	O
)	O
is	O
the	O
primary	O
Java	B-Language
compiler	I-Language
included	O
in	O
the	O
Java	B-Language
Development	I-Language
Kit	I-Language
(	O
JDK	B-Language
)	O
from	O
Oracle	B-Application
Corporation	I-Application
.	O
</s>
<s>
Martin	O
Odersky	O
implemented	O
the	O
GJ	O
compiler	B-Language
,	O
and	O
his	O
implementation	O
became	O
the	O
basis	O
for	O
javac	B-General_Concept
.	O
</s>
<s>
The	O
compiler	B-Language
accepts	O
source	O
code	O
conforming	O
to	O
the	O
Java	B-Language
language	I-Language
specification	I-Language
(	O
JLS	O
)	O
and	O
produces	O
Java	B-Language
bytecode	I-Language
conforming	O
to	O
the	O
Java	B-Language
Virtual	I-Language
Machine	I-Language
Specification	I-Language
(	O
JVMS	B-Language
)	O
.	O
</s>
<s>
javac	B-General_Concept
is	O
itself	O
written	O
in	O
Java	B-Device
.	O
</s>
<s>
The	O
compiler	B-Language
can	O
also	O
be	O
invoked	O
programmatically	O
.	O
</s>
<s>
On	O
13	O
November	O
2006	O
,	O
Sun	O
's	O
HotSpot	B-Language
Java	B-Language
virtual	I-Language
machine	I-Language
(	O
JVM	B-Language
)	O
and	O
Java	B-Language
Development	I-Language
Kit	I-Language
(	O
JDK	B-Language
)	O
were	O
made	O
available	O
under	O
the	O
GPL	B-License
license	I-License
.	O
</s>
<s>
Since	O
version	O
0.95	O
,	O
GNU	B-Language
Classpath	I-Language
,	O
a	O
free	B-Language
implementation	I-Language
of	O
the	O
Java	B-Library
Class	I-Library
Library	I-Library
,	O
supports	O
compiling	B-Language
and	O
running	O
javac	B-General_Concept
using	O
the	O
Classpath	O
runtime	B-Device
—	O
GNU	B-Language
Interpreter	I-Language
for	I-Language
Java	I-Language
(	O
GIJ	O
)	O
—	O
and	O
compiler	B-Language
—	O
GNU	B-Language
Compiler	I-Language
for	I-Language
Java	I-Language
(	O
GCJ	O
)	O
—	O
and	O
also	O
allows	O
one	O
to	O
compile	B-Language
the	O
GNU	B-Language
Classpath	I-Language
class	O
library	O
,	O
tools	O
and	O
examples	O
with	O
javac	B-General_Concept
itself	O
.	O
</s>
