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doubt in excercise question of kathhy siera

 
Ranch Hand
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when i comple code it gives the aout put as amrut sabade bt i think that the method do1 is static and how it can be assced using an object of the class
please clerify me m beginer
thanks
 
Greenhorn
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Hi,

In Java you are allowed to use an object instead of a class when accessing static methods. The compiler will just replace that object with the class type and access the class method.

E.g s.do1() and Singer.do1() will both work as the compiler will just see s.do1() as Singer.do1().
 
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Interesting part is even "null" reference can also be used to access static method and it will not throw NullPointerException

e.g.



will work and not throw any exception.
 
Greenhorn
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hi amrut,
you try this......

Singer s;
s = null;
s.do1();

if compiler really uses "s" ,it should produce NullPointerException ....but in this case it wont
 
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