Adding onto what everybody else said. A normal class method you would have to instantiate the object as follows.
If you have a class called ClassExample with a method testMethod
You would have to do the following to call it
ClassExample example = new ClassExample();
example.testMethod()...
if you have a static method you do not have to worry about instantiating the object so you can do something similar to the following
ClassExample.testMethod()
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solved why do we declare a method as static [closed]