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A static method in Java is a method that is part of a class rather than an instance of that class. Every instance of a class has access to the method. Static methods have access to class variables (static variables) without using the class’s object (instance).
The static keyword is a non-access modifier used for methods and attributes. Static methods/attributes can be accessed without creating an object of a class.
In this tutorial, we’ll explore the static keyword of the Java language in detail. The static keyword means that a member – like a field or method – belongs to the class itself, rather than to any specific instance of that class.
In Java, a method can be declared as "static" to indicate that it belongs to the class rather than an instance of the class. This means that static methods are shared among all instances of the class and can be invoked using the class name itself, without creating an object.
In Java, static methods are methods that belong to a class rather than an instance of the class. They are called on the class itself, rather than on an object created from that class. Static methods have several common use cases:
A static method belongs to the class and a non-static method belongs to an object of a class. That is, a non-static method can only be called on an object of a class that it belongs to. A static method can however be called both on the class as well as an object of the class.
The keyword static is used to denote a field or a method as belonging to the class itself and not to any particular instance. Using your code, if the object Clock is static, all of the instances of the Hello class will share this Clock data member (field) in common.