The questions
There are
three
questions. Answer all
questions
.
1.
[10 marks]
Define a
Java
interface
t
hat contains
two
abstract method
s matching
the following requirements:
a.
One method is called
set
and the other is called
check
.
b.
Both methods
take a single
parameter
of the same type
.
c.
The
set
method has a
void
return type and the
check
method has a
boolean
return type.
d.
The
parameter
type of
both methods
must be
one of the primitive types:
double
,
int
or
long
.
You are free to choose the type.
Define a
complete
concrete class that implements
your interface
according to the
following requirements
:
a.
An instance of the class must store in an instance variable the most recent
parameter value passed to its
set
method.
b.
A call to the
check
method must return
true
if its parameter value is less
-
than o
r equal to the most recent value passed to the
set
method
, and
false
othe
rwise
.
c.
The initial value of the instance variable described above must be set by a
parameter to the class’s constructor