Java Reference
In-Depth Information
15. Note that you do not catch a
CloneNotSupportedException
because any
such thrown exception in
super.clone
is caught inside the base class method
super.clone
.
public class
BigRecord
extends
Record
implements
Cloneable
{
private
StockItem item3;
...
public
Object clone()
{
BigRecord copy =
(BigRecord)
super
.clone();
copy.item3 =
(StockItem)item3.clone();
return
copy;
}
}
16. The heading of the class definition changes to what is shown in the following and
the method
clone
shown there is added. The version of
Date
for this chapter on the
accompanying website includes this definition of
clone
.
public class
Date
implements
Cloneable
{
extra code
on website
private
String month;
private int
day;
private int
year;
...
public
Object clone()
{
try
{
return super
.clone();
//Invocation of
//clone in the base class Object
}
catch
(CloneNotSupportedException e)
{
//This should not happen.
return null
;
//To keep compiler happy.
}
}
}
17. The heading of the class definition changes to what is shown in the following and
the method
clone
shown there is added. The version of
Employee
for this chapter
on the accompanying website includes this definition of
clone
.
extra code
on website
