<s>
Lightweight	B-Language
Java	I-Language
(	O
LJ	B-Language
)	O
is	O
a	O
fully	O
formalized	O
and	O
extensible	O
minimal	O
imperative	B-Application
fragment	O
of	O
Java	B-Language
.	O
</s>
<s>
The	O
definition	O
of	O
LJ	B-Language
was	O
proven	O
type-sound	B-Language
in	O
Isabelle/HOL	B-Application
.	O
</s>
