<s>
The	O
Java	B-Language
Development	I-Language
Kit	I-Language
(	O
JDK	B-Language
)	O
is	O
a	O
distribution	O
of	O
Java	B-Device
Technology	I-Device
by	O
Oracle	B-Application
Corporation	I-Application
.	O
</s>
<s>
It	O
implements	O
the	O
Java	B-Language
Language	I-Language
Specification	I-Language
(	O
JLS	O
)	O
and	O
the	O
Java	B-Language
Virtual	I-Language
Machine	I-Language
Specification	I-Language
(	O
JVMS	B-Language
)	O
and	O
provides	O
the	O
Standard	O
Edition	O
(	O
SE	O
)	O
of	O
the	O
Java	B-Device
Application	O
Programming	O
Interface	O
(	O
API	O
)	O
.	O
</s>
<s>
It	O
is	O
derivative	O
of	O
the	O
community	O
driven	O
OpenJDK	B-Language
which	O
Oracle	B-Application
stewards	O
.	O
</s>
<s>
It	O
provides	O
software	O
for	O
working	O
with	O
Java	B-Device
applications	O
.	O
</s>
<s>
Examples	O
of	O
included	O
software	O
are	O
the	O
virtual	O
machine	O
,	O
a	O
compiler	O
,	O
performance	O
monitoring	O
tools	O
,	O
a	O
debugger	B-Application
,	O
and	O
other	O
utilities	O
that	O
Oracle	B-Application
considers	O
useful	O
for	O
a	O
Java	B-Device
programmer	O
.	O
</s>
<s>
Oracle	B-Application
have	O
released	O
the	O
current	O
version	O
of	O
the	O
software	O
under	O
the	O
Oracle	B-Application
No-Fee	O
Terms	O
and	O
Conditions	O
(	O
NFTC	O
)	O
license	O
.	O
</s>
<s>
Oracle	B-Application
release	O
binaries	O
for	O
the	O
x86-64	B-Device
architecture	O
for	O
Windows	O
,	O
macOS	B-Application
,	O
and	O
Linux	B-Application
based	O
operating	O
systems	O
,	O
and	O
for	O
the	O
aarch64	B-Architecture
architecture	O
for	O
macOS	B-Application
and	O
Linux	B-Application
.	O
</s>
<s>
Previous	O
versions	O
have	O
supported	O
the	O
Oracle	B-Application
Solaris	I-Application
operating	O
system	O
and	O
SPARC	B-Architecture
architecture	O
.	O
</s>
<s>
Oracle	B-Application
's	O
primary	O
implementation	O
of	O
the	O
JVMS	B-Language
is	O
known	O
as	O
the	O
HotSpot	B-Language
(	O
virtual	O
machine	O
)	O
.	O
</s>
<s>
The	O
JDK	B-Language
has	O
as	O
its	O
primary	O
components	O
a	O
collection	O
of	O
programming	O
tools	O
,	O
including	O
:	O
</s>
<s>
idlj	O
the	O
IDL-to-Java	O
compiler	O
.	O
</s>
<s>
This	O
utility	O
generates	O
Java	B-Device
bindings	B-Application
from	O
a	O
given	O
Java	B-Language
IDL	I-Language
file	O
.	O
</s>
<s>
jabswitch	O
the	O
Java	B-Language
Access	I-Language
Bridge	I-Language
.	O
</s>
<s>
java	B-Device
the	O
loader	B-Operating_System
for	O
Java	B-Device
applications	O
.	O
</s>
<s>
This	O
tool	O
is	O
an	O
interpreter	O
and	O
can	O
interpret	O
the	O
class	O
files	O
generated	O
by	O
the	O
javac	B-General_Concept
compiler	O
.	O
</s>
<s>
The	O
old	O
deployment	O
launcher	O
,	O
jre	O
,	O
comes	O
with	O
Sun	O
JDK	B-Language
,	O
and	O
instead	O
it	O
has	O
been	O
replaced	O
by	O
this	O
new	O
java	B-Device
loader	B-Operating_System
.	O
</s>
<s>
jar	B-Language
the	O
archiver	O
,	O
which	O
packages	O
related	O
class	O
libraries	B-Library
into	O
a	O
single	O
JAR	B-Language
file	I-Language
.	O
</s>
<s>
This	O
tool	O
also	O
helps	O
manage	O
JAR	B-Language
files	I-Language
.	O
</s>
<s>
jinfo	O
This	O
utility	O
gets	O
configuration	O
information	O
from	O
a	O
running	O
Java	B-Device
process	O
or	O
crash	O
dump	O
.	O
</s>
<s>
jmap	O
This	O
utility	O
outputs	O
the	O
memory	O
map	O
for	O
Java	B-Device
and	O
can	O
print	O
shared	O
object	O
memory	O
maps	O
or	O
heap	O
memory	O
details	O
of	O
a	O
given	O
process	O
or	O
core	O
dump	O
.	O
</s>
<s>
jps	O
Java	B-Language
Virtual	I-Language
Machine	I-Language
Process	O
Status	O
Tool	O
lists	O
the	O
instrumented	O
HotSpot	B-Language
Java	B-Language
Virtual	I-Language
Machines	I-Language
(	O
JVMs	B-Language
)	O
on	O
the	O
target	O
system	O
.	O
</s>
<s>
jrunscript	O
Java	B-Device
command-line	B-Application
script	B-Language
shell	B-Operating_System
.	O
</s>
<s>
jshell	B-Language
-	O
a	O
read	B-Application
–	I-Application
eval	I-Application
–	I-Application
print	I-Application
loop	I-Application
,	O
introduced	O
in	O
Java	B-Device
9	O
.	O
</s>
<s>
policytool	O
the	O
policy	O
creation	O
and	O
management	O
tool	O
,	O
which	O
can	O
determine	O
policy	O
for	O
a	O
Java	B-Language
runtime	I-Language
,	O
specifying	O
which	O
permissions	O
are	O
available	O
for	O
code	O
from	O
various	O
sources	O
.	O
</s>
<s>
wsimport	O
generates	O
portable	O
JAX-WS	B-Language
artifacts	O
for	O
invoking	O
a	O
web	O
service	O
.	O
</s>
<s>
xjc	O
Part	O
of	O
the	O
Java	B-Language
API	I-Language
for	O
XML	O
Binding	O
(	O
JAXB	O
)	O
API	O
.	O
</s>
<s>
It	O
accepts	O
an	O
XML	O
schema	O
and	O
generates	O
Java	B-Device
classes	O
.	O
</s>
<s>
Experimental	O
tools	O
may	O
not	O
be	O
available	O
in	O
future	O
versions	O
of	O
the	O
JDK	B-Language
.	O
</s>
<s>
The	O
JDK	B-Language
also	O
comes	O
with	O
a	O
complete	O
Java	B-Language
Runtime	I-Language
Environment	O
(	O
JRE	O
)	O
,	O
usually	O
called	O
a	O
private	O
runtime	O
,	O
due	O
to	O
the	O
fact	O
that	O
it	O
is	O
separated	O
from	O
the	O
"	O
regular	O
"	O
JRE	O
and	O
has	O
extra	O
contents	O
.	O
</s>
<s>
It	O
consists	O
of	O
a	O
Java	B-Language
virtual	I-Language
machine	I-Language
and	O
all	O
of	O
the	O
class	O
libraries	B-Library
present	O
in	O
the	O
production	O
environment	O
,	O
as	O
well	O
as	O
additional	O
libraries	B-Library
only	O
useful	O
to	O
developers	O
,	O
such	O
as	O
the	O
internationalization	B-General_Concept
libraries	B-Library
and	O
the	O
IDL	B-General_Concept
libraries	B-Library
.	O
</s>
<s>
Copies	O
of	O
the	O
JDK	B-Language
also	O
include	O
a	O
wide	O
selection	O
of	O
example	O
programs	O
demonstrating	O
the	O
use	O
of	O
almost	O
all	O
portions	O
of	O
the	O
Java	B-Language
API	I-Language
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
most	O
widely	O
used	O
JDK	B-Language
discussed	O
in	O
this	O
article	O
,	O
there	O
are	O
other	O
JDKs	B-Language
commonly	O
available	O
for	O
a	O
variety	O
of	O
platforms	O
,	O
some	O
of	O
which	O
started	O
from	O
the	O
Sun	O
JDK	B-Language
source	O
and	O
some	O
that	O
did	O
not	O
.	O
</s>
<s>
All	O
adhere	O
to	O
the	O
basic	O
Java	B-Device
specifications	O
,	O
but	O
often	O
differ	O
in	O
explicitly	O
unspecified	O
areas	O
,	O
such	O
as	O
garbage	O
collection	O
,	O
compilation	O
strategies	O
,	O
and	O
optimization	O
techniques	O
.	O
</s>
<s>
Azul	O
Systems	O
Zing	O
,	O
low	O
latency	O
JDK	B-Language
for	O
Linux	B-Application
;	O
</s>
<s>
Azul	O
Systems	O
/	O
OpenJDK-based	O
Zulu	O
for	O
Linux	B-Application
,	O
Windows	O
,	O
Mac	B-Application
OS	I-Application
X	O
,	O
embedded	O
and	O
the	O
cloud	O
;	O
</s>
<s>
OpenJDK	B-Language
/	O
IcedTea	B-Language
;	O
</s>
<s>
Aicas	O
JamaicaVM	B-Language
;	O
</s>
<s>
IBM	B-Language
J9	I-Language
JDK	B-Language
,	O
for	O
AIX	O
,	O
Linux	B-Application
,	O
Windows	O
,	O
MVS	O
,	O
OS/400	O
,	O
Pocket	O
PC	O
,	O
z/OS	O
;	O
</s>
<s>
Apache	B-Application
Harmony	I-Application
;	O
</s>
<s>
Apple	O
's	O
Mac	B-Language
OS	I-Language
Runtime	I-Language
for	I-Language
Java	I-Language
JVM/JDK	O
for	O
Classic	B-Application
Mac	I-Application
OS	I-Application
;	O
</s>
<s>
Blackdown	B-Language
Java	I-Language
Port	O
of	O
Sun	O
's	O
JDK	B-Language
for	O
Linux	B-Application
;	O
</s>
<s>
GNU	B-Operating_System
's	O
Classpath	B-Language
and	O
GCJ	B-Language
(	O
The	O
GNU	B-Language
Compiler	I-Language
for	I-Language
Java	I-Language
)	O
;	O
</s>
<s>
Oracle	B-Application
Corporation	I-Application
's	O
JRockit	B-Language
JDK	B-Language
,	O
for	O
Windows	O
,	O
Linux	B-Application
,	O
and	O
Solaris	B-Application
;	O
</s>
