Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.java.programmer > #32932
| Path | csiph.com!au2pb.net!feeder.erje.net!1.eu.feeder.erje.net!news-1.dfn.de!news.dfn.de!cache.uni-koblenz.de!not-for-mail |
|---|---|
| From | Tassilo Horn <tsdh@gnu.org> |
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: What goes wrong with cloning here |
| Date | Fri, 23 Oct 2015 18:12:54 +0200 |
| Organization | University Koblenz-Landau Campus Koblenz |
| Lines | 25 |
| Message-ID | <87pp05k1h5.fsf@gnu.org> (permalink) |
| References | <87oafplh3t.fsf@Equus.decebal.nl> |
| NNTP-Posting-Host | 2.161.212.107 |
| Mime-Version | 1.0 |
| Content-Type | text/plain |
| X-Trace | cache.uni-koblenz.de 1445616775 20439 2.161.212.107 (23 Oct 2015 16:12:55 GMT) |
| X-Complaints-To | news@cache.uni-koblenz.de |
| NNTP-Posting-Date | Fri, 23 Oct 2015 16:12:55 +0000 (UTC) |
| User-Agent | Gnus/5.130014 (Ma Gnus v0.14) Emacs/25.0.50 (gnu/linux) |
| Cancel-Lock | sha1:+OOE+1ExEIfI4T0z7nek5CwlhJE= |
| Xref | csiph.com comp.lang.java.programmer:32932 |
Show key headers only | View raw
Cecil Westerhof <Cecil@decebal.nl> writes:
> When I in class A change a field from class B in the clone, the field
> in the original is also changed. That should not happen.
>
> public class A implements Cloneable {
> private B key;
> ^^^
> public Object clone() throws CloneNotSupportedException {
> A clone = (A) super.clone();
> B newKey = new B();
> B oldKey = getKey();
>
> newKey.setA(oldKey.getA());
> newKey.setB(oldKey.getB());
> newKey.setC(oldKey.getC());
> newKey.setD(oldKey.getD());
> clone.setKey(key);
^^^
I guess here you want to set the key of the clone to newKey, not to
this.key.
Bye,
Tassilo
Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
What goes wrong with cloning here Cecil Westerhof <Cecil@decebal.nl> - 2015-10-23 17:49 +0200
Re: What goes wrong with cloning here Tassilo Horn <tsdh@gnu.org> - 2015-10-23 18:12 +0200
Re: What goes wrong with cloning here Cecil Westerhof <Cecil@decebal.nl> - 2015-10-24 00:51 +0200
Re: What goes wrong with cloning here Cecil Westerhof <Cecil@decebal.nl> - 2015-10-24 01:44 +0200
csiph-web