Class call and invoke

I need to use for the same class two different communication ways:
1. I need to call it from toggle button
Abc abc = new Abc();
abc.method1();
2. At the same time this class Abc created
private static Abc abc = new Abc();
public static Abc getInstance() {
return instance;
}
I have to use 1 way in jToggleButton to change boolean value , I try to do it with invoking instance, but it doesn't work.
Please advice.
gbcbrAsked:
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for_yanConnect With a Mentor Commented:
If you collect boolean or double values in DC why this has anything to do with the way you access your ABC class ? Please, explain it to yourself and to me in plain words.

As you can see in this discussion there are very few classes which have both public constructore and getInstance mechanism. Why do you want to be so special?  Do like everyone else - either  - or. It is always easier to be like the majority
http://www.velocityreviews.com/forums/t140755-constructor-or-getinstance-method.html
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for_yanCommented:
If it has public constructor why would you use second way? If it does not have public constructor you cannot use it in the first way.
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ksivananthConnect With a Mentor Commented:
you need to invoke the getInstance method in all the place instead of new ABC()!
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gbcbrAuthor Commented:
>> If it has public constructor why would you use second way?
Please explain.
I use second way because this class DecisionCenter has to collect few boolean values from different classes and if all this values lay down into my puzzle correct it will allow deal.
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gbcbrAuthor Commented:
Thank you for very good link to discussion
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