Answer / sk

B b=new A();

you cannot assign a superclass object to a reference of
subclass.

Answer / kay

class A
{
public virtual void me()
{ s.o.p(" hi");
}
}

class B extends A
{
public override void me()
{ s.o.p(" wat up!");
}
}

class M
{
A a = new B();
a.me();
B b = new A();
b.me();
}

//output :
hi wat up!

hai i am prasanna.I am MCA 2009 fresher.tell me about certifications.which certification helps me to improve my carrier and to get a technically oriented job ,which certification helps to get job faster.

0 Answers  

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major characteristics of software system

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