Purpose of Static methods in java
java, static
Solution
Static methods and fields belong to all objects in a class, as opposed to non-static ones, which belong to a particular instance of a class. In your example, no matter how many `JFrame frame` objects you create, accessing `frame.EXIT_ON_CLOSE` would produce the same exact result. To state this fact explicitly, `static` members (also known as "class members") are used.
Same logic applies to static methods: if a method does not access instance variables, its result becomes independent of the state of your object. The `main(String[] args)` method is one such example. Other common examples include various factory methods, parsing methods for primitives, and so on. These methods do not operate on an instance, so they are declared static.
Problem
i am confused about the usage of static methods in java , for example it makes sense if `main` method is static , but while coding we have got objects for example ``` JFrame frame= new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// here why not frame.EXIT_ON_CLOSE ``` and same way when we use ``` GridBagConstraints c= new GridBagConstraints();// we have an object but still c.anchor = GridBagConstraints.PAGE_END; ``` so can anyone please explain me the is there any special reasons for it ?