java - BorderLayout correct syntax -


as far know syntax of add method 

add(component , string);

ex.

add(new button("north"), borderlayout.north);

but saw syntax of add method in class , passses compilation proccess.

add(string , component);

and below add method :

add("north", new button("north"));

can explain me happened here , if going work , why ?

has shown in java doc, container class has 5 different add() methods overloads

in first example, borderlayout.north constant defining position of component in container.

in second example, "north" name give component.


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