newbie question

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ahimsa - 14 Nov 2006 17:11 GMT

Hi all,

I am new to the language and have the following code:

public static void main(String[] args)
{
System.out.println("Running RTSS_STD");

rtss_std sim = new rtss_std();

rtss_std.run_sim();
}

but it gives the following error when I compile:
rtss_std.java:60: non-static method run_sim() cannot be referenced from a
static
context
rtss_std.run_sim();
^
1 error

Can anyone explain what I need to do to create an object in a static func
and then use non-static objects??

TIA!

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Ian Shef - 14 Nov 2006 19:09 GMT

"ahimsa" <mark.cridge@googlemail.co.uk> wrote in news:4559f8be$0$1392
$da0feed9@news.zen.co.uk:

> Hi all,
>
[quoted text clipped - 21 lines]
>
> TIA!

rtss_std is a badly named class. If it was named according to Java
conventions, perhaps the error would stand out more. A better name would
be:
RtssStd

The capitalization makes it clear that this is the name of a class, while
"sim" is the name of a reference variable of type RtssStd. Then it mmight
be clear that this line:
rtss_std.run_sim() ;

should be more like:
sim.run_sim() ;

Of course, the method run_sim should be runSim or perhaps just "sim" to
comply with the naming conventions too.

Let us know whether this is clear or you need further explanation about
static vs non-static.

Good Luck!

Signature

Ian Shef 805/F6 * These are my personal opinions
Raytheon Company * and not those of my employer.
PO Box 11337 *
Tucson, AZ 85734-1337 *

Reply to this Message

Sean Fritz - 06 Jan 2007 08:32 GMT

> Hi all,
>
[quoted text clipped - 21 lines]
>
> TIA!

It just needs the method of RtssStd to be static:

public static type runSim()
{
...
}

where "type" is the type of whatever the method returns.

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