Re: Instantiate a class with a variable as its name
- From: Thomas Hawtin <usenet@xxxxxxxxxxxxxxxxx>
- Date: Tue, 18 Jul 2006 15:22:43 +0100
BogusException wrote:
The subject line says it all! This is an extension of a previous topic.
I want to create an instance of a class, but want to refer to the name
of the instance, at creation time, via a variable. So, if I were to
make 3 classes in an iterative loop, I would be able to call the
instances c1, c2, c3 programmatically.
The equivelent is close to anonymous hashes and arrays in Perl, like
$$someArrayName[0];
.. OK, so its not that close!
The result is that each of the instantiated classes can then also be
addressed programmatically-without knowing their exact instance name.
So if I knew that I created 3 classes (which I would, as they were
created iteratively), I could call a method common to all 3 one at a
time.
All of the Java documentation regarding anonymity refers to inner
classes, which although powerful are not the same thing as an anonymous
name for a class instance. Is this possible in Java?
Sounds to me like you want a List (or array)...
How does what you want differ from:
List<C> cList = new ArrayList<C>();
for (int ct=0; ct<num; ++ct) {
cList.add(new C());
}
....
for (C c : cList) {
c.someMethod();
}
?
Tom Hawtin
--
Unemployed English Java programmer
http://jroller.com/page/tackline/
.
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