<s>
JetUML	B-Language
is	O
a	O
UML	B-Application
tool	I-Application
developed	O
as	O
a	O
pure-Java	O
desktop	B-Application
application	I-Application
for	O
educational	O
and	O
professional	O
use	O
.	O
</s>
<s>
The	O
project	O
was	O
launched	O
in	O
January	O
2015	O
with	O
a	O
focus	O
on	O
minimalist	B-Device
design	I-Device
.	O
</s>
<s>
The	O
name	O
JetUML	B-Language
relates	O
to	O
the	O
primary	O
goal	O
of	O
the	O
tool	O
,	O
namely	O
the	O
quick	O
sketching	O
of	O
diagrams	O
in	O
the	O
Unified	B-Language
Modeling	I-Language
Language	I-Language
(	O
UML	B-Language
)	O
.	O
</s>
<s>
JetUML	B-Language
is	O
a	O
free	B-License
and	I-License
open-source	I-License
software	I-License
licensed	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
(	O
GPL	B-License
)	O
.	O
</s>
<s>
The	O
JetUML	B-Language
project	O
was	O
launched	O
in	O
January	O
2015	O
by	O
Martin	O
P	O
.	O
Robillard	O
,	O
a	O
professor	O
of	O
computer	O
science	O
at	O
McGill	O
University	O
.	O
</s>
<s>
The	O
original	O
goal	O
of	O
the	O
tool	O
was	O
to	O
support	O
the	O
interactive	O
sketching	O
of	O
UML	B-Language
diagrams	I-Language
during	O
lectures	O
and	O
software	O
design	O
sessions	O
.	O
</s>
<s>
The	O
initial	O
source	O
code	O
was	O
derived	O
from	O
the	O
Java	O
Swing-based	O
Violet	O
UML	B-Language
application	O
developed	O
by	O
Cay	O
Horstmann	O
,	O
and	O
then	O
progressively	O
rewritten	O
to	O
modernize	O
it	O
and	O
focus	O
solely	O
on	O
UML	B-Language
sketching	O
.	O
</s>
<s>
In	O
winter	O
2018	O
,	O
the	O
application	O
was	O
migrated	O
to	O
the	O
JavaFX	B-Application
GUI	O
framework	B-Application
(	O
Release	O
2.0	O
)	O
.	O
</s>
<s>
JetUML	B-Language
was	O
used	O
to	O
create	O
the	O
hundred-plus	O
UML	B-Language
diagrams	I-Language
in	O
the	O
book	O
Introduction	O
to	O
Software	O
Design	O
with	O
Java	B-Language
.	O
</s>
<s>
JetUML	B-Language
aims	O
to	O
sketch	O
software	O
design	O
ideas	O
with	O
a	O
minimalist	B-Device
feature	O
set	O
.	O
</s>
<s>
It	O
allows	O
users	O
to	O
create	O
,	O
modify	O
,	O
and	O
annotate	O
the	O
main	O
UML	B-Language
diagram	I-Language
types	O
:	O
class	O
,	O
sequence	O
,	O
state	B-Application
,	O
object	O
diagrams	O
,	O
and	O
use	B-Language
case	I-Language
.	O
</s>
<s>
JetUML	B-Language
uses	O
UTF-8	O
encoding	O
to	O
share	O
diagrams	O
across	O
systems	O
including	O
Windows	B-Application
,	O
Linux	B-Application
,	O
and	O
macOS	B-Application
.	O
</s>
<s>
JetUML	B-Language
saves	O
diagrams	O
in	O
JSON	B-General_Concept
files	O
and	O
can	O
export	O
diagrams	O
as	O
images	O
in	O
various	O
graphic	O
formats	O
.	O
</s>
<s>
JetUML	B-Language
does	O
not	O
collect	O
or	O
share	O
any	O
personal	O
information	O
from	O
users	O
.	O
</s>
<s>
Users	O
can	O
send	O
feedback	O
and	O
report	O
issues	O
directly	O
to	O
the	O
open-source	B-License
repository	O
in	O
GitHub	B-Application
.	O
</s>
<s>
No	O
dependencies	O
:	O
without	O
depending	O
on	O
any	O
external	O
libraries	B-Library
,	O
JetUML	B-Language
minimizes	O
the	O
development	O
and	O
maintenance	O
cost	O
.	O
</s>
<s>
No	O
reflection	B-Language
:	O
JetUML	B-Language
does	O
not	O
use	O
any	O
highly	O
reflective	O
framework	B-Application
to	O
enhance	O
code	O
readability	O
.	O
</s>
<s>
No	O
streaming	B-Architecture
:	O
since	O
JetUML	B-Language
involves	O
few	O
data-intensive	O
operations	O
,	O
it	O
avoids	O
using	O
streams	B-Architecture
in	O
the	O
interface	B-Language
of	O
classes	O
and	O
limits	O
the	O
use	O
of	O
stream	B-Architecture
API	B-Application
within	O
the	O
method	B-Language
scope	B-Language
.	O
</s>
<s>
Well-Encapsulated	O
:	O
JetUML	B-Language
is	O
designed	O
to	O
support	O
the	O
highest	O
possible	O
level	O
of	O
encapsulation	B-Application
.	O
</s>
<s>
Incomplete	O
support	O
for	O
other	O
UML	B-Language
diagram	I-Language
types	O
.	O
</s>
