what is Static Methods in delphi ?

Methods are by default static. When a static method is called, the declared (compile-time) type of the class or object variable used in the method call determines which implementation to activate. In the following example, the Draw methods are static:

type
     TFigure = class
       procedure Draw;
     end;
 
     TRectangle = class(TFigure)
       procedure Draw;
     end;