<s>
The	O
Java	B-Language
Platform	I-Language
Debugger	I-Language
Architecture	I-Language
(	O
JPDA	B-Language
)	O
is	O
a	O
collection	O
of	O
APIs	B-General_Concept
to	O
debug	O
Java	B-Language
code	I-Language
.	O
</s>
<s>
Java	B-Language
Debugger	I-Language
Interface	I-Language
(	O
JDI	O
)	O
–	O
defines	O
a	O
high-level	O
Java	B-Language
language	I-Language
interface	O
that	O
developers	O
can	O
easily	O
use	O
to	O
write	O
remote	O
debugger	B-Application
application	O
tools	O
.	O
</s>
<s>
Java	B-Language
Virtual	I-Language
Machine	I-Language
Tools	I-Language
Interface	I-Language
(	O
JVMTI	B-Language
)	O
–	O
a	O
native	O
interface	O
that	O
helps	O
to	O
inspect	O
the	O
state	O
and	O
to	O
control	O
the	O
execution	O
of	O
applications	O
running	O
in	O
the	O
Java	B-Language
Virtual	I-Language
Machine	I-Language
(	O
JVM	B-Language
)	O
.	O
</s>
<s>
Java	B-Language
Virtual	I-Language
Machine	I-Language
Debug	O
Interface	O
(	O
JVMDI	B-Language
)	O
–	O
JVMDI	B-Language
was	O
deprecated	O
in	O
J2SE	O
5.0	O
in	O
favor	O
of	O
JVM	B-Language
TI	I-Language
,	O
and	O
was	O
removed	O
in	O
Java	B-Language
SE	O
6	O
.	O
</s>
<s>
Java	B-Language
Debug	I-Language
Wire	I-Language
Protocol	I-Language
(	O
JDWP	B-Language
)	O
–	O
defines	O
communication	O
between	O
debuggee	O
(	O
a	O
Java	B-Language
application	O
)	O
and	O
debugger	B-Application
processes	O
.	O
</s>
<s>
JDI	O
is	O
the	O
highest-layer	O
of	O
the	O
Java	B-Language
Platform	I-Language
Debugger	I-Language
Architecture	I-Language
.	O
</s>
<s>
It	O
allows	O
to	O
access	O
the	O
JVM	B-Language
and	O
the	O
internal	O
variables	O
of	O
the	O
debugged	O
program	O
.	O
</s>
