<s>
In	O
object-oriented	B-Language
programming	I-Language
,	O
a	O
helper	B-Application
class	I-Application
is	O
used	O
to	O
assist	O
in	O
providing	O
some	O
functionality	O
,	O
which	O
is	O
n't	O
the	O
main	O
goal	O
of	O
the	O
application	O
or	O
class	O
in	O
which	O
it	O
is	O
used	O
.	O
</s>
<s>
An	O
instance	O
of	O
a	O
helper	B-Application
class	I-Application
is	O
called	O
a	O
helper	B-Application
object	I-Application
(	O
for	O
example	O
,	O
in	O
the	O
delegation	B-Language
pattern	I-Language
)	O
.	O
</s>
<s>
A	O
utility	O
class	O
is	O
a	O
special	O
case	O
of	O
a	O
helper	B-Application
class	I-Application
in	O
which	O
the	O
methods	O
are	O
all	O
static	O
.	O
</s>
<s>
Multiple	O
instances	O
of	O
the	O
helper	B-Application
class	I-Application
may	O
exist	O
as	O
well	O
.	O
</s>
<s>
The	O
other	O
alternative	O
is	O
wrapping	O
helper	B-Application
class	I-Application
parameters	O
into	O
a	O
class	O
as	O
a	O
field	O
.	O
</s>
