Is there anything like static class in Java?

Yes, in Java, there is a concept known as a static class, but it is important to clarify that this refers specifically to static nested classes. Java does not allow the top-level class to be declared as static; only nested classes within another class can be declared static.

A static nested class is a type of inner class that is statically defined within an outer class. It can access all of the static members of its enclosing outer class, but it cannot access the instance variables and methods of the outer class[1][2][4][5][6][7]. This is because a static nested class does not require an instance of the outer class to be created in order to be instantiated itself. Therefore, it behaves much like a top-level class that has been nested purely for packaging convenience.

Static nested classes are particularly useful for grouping helper classes with their outer class if they are only going to be used within that context. They help in organizing code logically and keeping the name...