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Groups > comp.lang.java.programmer > #15194
| From | bilsch <bilsch01@gmail.com> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: It doesn't like 'super' where ever I put it. |
| Date | 2012-06-10 13:17 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <jr2vca$32l$2@dont-email.me> (permalink) |
| References | <jr27ce$7uo$1@dont-email.me> <ydny5nvgt9d.fsf@shell.xmission.com> <jr2aet$pv7$1@dont-email.me> <ydntxyjgmkb.fsf@shell.xmission.com> |
On 6/10/2012 9:26 AM, Jim Janney wrote:
> bilsch<bilsch01@gmail.com> writes:
>
>> On 6/10/2012 7:02 AM, Jim Janney wrote:
>>> bilsch<bilsch01@gmail.com> writes:
>>>> BUILD SUCCESSFUL (total time: 2 seconds)
>>>
>>> Try changing
>>>
>>> public void CalcFrame1() {
>>>
>>> to
>>>
>>> public CalcFrame1() {
>>>
>> OK. Thanks. Can you tell me why that makes a difference?
>
> Constructors are fundamentally different from ordinary methods, so most
> object-oriented languages use a different syntax for them. In Java, a
> constructor definition looks like a method, but without an explicit
> return type and using a name that matches the class name. In other
> languages the syntax may be different -- for example, in Python the name
> is always __init__ -- but the underlying idea is the same: constructors
> are not ordinary methods and take a different syntax.
>
> Why are constructors different? Most classes have some code that you
> want to run whenever a new object is created, and it would be tedious to
> have to call it explicitly every time. I used to mimic OOP in C and you
> had to do things like
>
> struct Foo* foo = (struct Foo*) malloc(sizeof(struct Foo));
> foo->init();
>
> Forcing all object creation to go through a constructor makes the code
> simpler and more reliable. And even when a class has a constructor that
> appears to be empty, there's still some code that the compiler generates
> automatically the make the new object a proper instance of its class.
>
Thanks for the info.
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It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-10 06:27 -0700
Re: It doesn't like 'super' where ever I put it. v_borchert@despammed.com (Volker Borchert) - 2012-06-10 13:49 +0000
Re: It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-10 07:08 -0700
Re: It doesn't like 'super' where ever I put it. Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-10 11:34 -0400
Re: It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-10 12:58 -0700
Re: It doesn't like 'super' where ever I put it. markspace <-@.> - 2012-06-10 13:43 -0700
Re: It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-11 21:01 -0700
Re: It doesn't like 'super' where ever I put it. v_borchert@despammed.com (Volker Borchert) - 2012-06-10 15:44 +0000
Re: It doesn't like 'super' where ever I put it. Robert Klemme <shortcutter@googlemail.com> - 2012-06-10 20:39 +0200
Re: It doesn't like 'super' where ever I put it. "Gavino" <invalid@invalid.invalid> - 2012-06-11 20:13 +0200
Re: It doesn't like 'super' where ever I put it. Robert Klemme <shortcutter@googlemail.com> - 2012-06-11 22:51 +0200
Re: It doesn't like 'super' where ever I put it. "Gavino" <invalid@invalid.invalid> - 2012-06-12 00:45 +0200
Re: It doesn't like 'super' where ever I put it. Martin Gregorie <martin@address-in-sig.invalid> - 2012-06-11 22:53 +0000
Re: It doesn't like 'super' where ever I put it. Lew <lewbloch@gmail.com> - 2012-06-11 16:42 -0700
Re: It doesn't like 'super' where ever I put it. Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-11 19:53 -0400
Re: It doesn't like 'super' where ever I put it. Lew <lewbloch@gmail.com> - 2012-06-11 17:38 -0700
Re: It doesn't like 'super' where ever I put it. "John B. Matthews" <nospam@nospam.invalid> - 2012-06-11 23:14 -0400
Re: It doesn't like 'super' where ever I put it. Robert Klemme <shortcutter@googlemail.com> - 2012-06-12 18:21 +0200
Re: It doesn't like 'super' where ever I put it. Robert Klemme <shortcutter@googlemail.com> - 2012-06-11 22:50 +0200
Re: It doesn't like 'super' where ever I put it. Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-06-10 09:59 -0400
Re: It doesn't like 'super' where ever I put it. Jim Janney <jjanney@shell.xmission.com> - 2012-06-10 08:02 -0600
Re: It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-10 07:20 -0700
Re: It doesn't like 'super' where ever I put it. Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-06-10 09:49 -0500
Re: It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-10 13:15 -0700
Re: It doesn't like 'super' where ever I put it. Jim Janney <jjanney@shell.xmission.com> - 2012-06-10 10:26 -0600
Re: It doesn't like 'super' where ever I put it. Jim Janney <jjanney@shell.xmission.com> - 2012-06-10 11:24 -0600
Re: It doesn't like 'super' where ever I put it. Jim Janney <jjanney@shell.xmission.com> - 2012-06-10 11:38 -0600
Re: It doesn't like 'super' where ever I put it. v_borchert@despammed.com (Volker Borchert) - 2012-06-10 18:17 +0000
Re: It doesn't like 'super' where ever I put it. Lew <noone@lewscanon.com> - 2012-06-10 12:26 -0700
Re: It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-10 13:17 -0700
Re: It doesn't like 'super' where ever I put it. Roedy Green <see_website@mindprod.com.invalid> - 2012-06-10 11:54 -0700
Re: It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-10 13:24 -0700
Re: It doesn't like 'super' where ever I put it. Lew <noone@lewscanon.com> - 2012-06-10 13:56 -0700
Re: It doesn't like 'super' where ever I put it. bilsch <bilsch01@gmail.com> - 2012-06-11 20:55 -0700
Re: It doesn't like 'super' where ever I put it. Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-06-11 16:41 -0700
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