non-static is a term to define a function or field that is bound to some object instance. Without an instance, non static fields cannot be accessed and non static methods cannot be invoked. Unlike static, non-static methods can be overridden (virtual).

191
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Non-static variable cannot be referenced from a static context

I've written this test code:class MyProgram{int count=0;public static void main(String[] args){System.out.println(count);}}But it gives the following error:Main....
88
votes
14answers
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calling non-static method in static method in Java [duplicate]

I'm getting an error when I try to call a non-static method in a static class.Cannot make a static reference to the non-static method methodName() from the type playbackI can't make the method ...
52
votes
9answers
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Difference between Static methods and Instance methods

I was just reading over the text given to me in my textbook and I'm not really sure I understand what it is saying. It's basically telling me that static methods or class methods include the "modifier"...
29
votes
3answers
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C# error: “An object reference is required for the non-static field, method, or property”

I have two classes, one for defining the algorithm parameters and another to implement the algorithm:Class 1 (algorithm parameters):using System;using System.Collections.Generic;using System....
23
votes
4answers
17k views

C++ Overload Static Function with Non-Static Function

I would like to print two different things depending on whether a function is called statically with Foo::print() or from an instance of Foo foo; foo.print();EDIT: Here is a class definition that ...
12
votes
7answers
5k views

Why do I get “non-static variable this cannot be referenced from a static context”?

I have a very simple class which I want to use as a subclass of another one. But when I put its code in the parent's class I get : non-static variable this cannot be referenced from a static ...
20
votes
4answers
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What does “operator=must be a non-static member” mean?

I'm in the process of creating a double-linked list, and have overloaded the operator=to make on list equal another:template<class T>void operator=(const list<T>& lst){clear()...
33
votes
5answers
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What is the difference between static methods in a Non static class and static methods in a static class?

I have two classes Class A and ClassB:static class ClassA{static string SomeMethod(){return "I am a Static Method";}}class ClassB{...
19
votes
2answers
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Non-static method … should not be called statically

I have recently done an update to PHP 5.4, and I get an error about static and non-static code.This is the error:PHP Strict Standards: Non-static method VTimer::get() should not be called ...
6
votes
8answers
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how to pass a non static-member function as a callback?

io_iterator_t enumerator;kern_return_t result;result=IOServiceAddMatchingNotification(mNotifyPort,kIOMatchedNotification,IOServiceMatching( "...
17
votes
6answers
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What Cases Require Synchronized Method Access in Java?

In what cases is it necessary to synchronize access to instance members? I understand that access to static members of a class always needs to be synchronized- because they are shared across all ...
7
votes
2answers
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non-static variable this cannot be referenced from a static context

The error comes from this lineBoardState addme=new BoardState();For some reason the non-static variable that it is pointing at is "new". I am unclear of how I can fix this error as new is ...
3
votes
3answers
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Accessing class member from static method

I know there are a lot of threads talking about this but so far I haven't found one that helps my situation directly. I have members of the class that I need to access from both static and non-static ...
0
votes
0answers
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If statement for jframe main method doesn't work [duplicate]

I'm new to java, I'm trying to select shape using jframe and then display the area using console output, I tried using as below but it's giving me an error. Not sure how to do an if statement. Thank ...
6
votes
3answers
59k views

invalid use of non-static member function [duplicate]

I have something like this: class Bar{public:pair<string,string> one;std::vector<string> cars;Bar(string one, string two, string car);};...

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