dimple bav

Hi Prithivi

Before you suggested me to practice the codes of I/O files i had done with it. So by coding i am able to understand it.

lets see i ll just go through for generics and discuss if any problems.

And hey thanks for the reply and i follow the way you suggested.

I am suppose to give exam by June.

Hi all


I am finding difficulty with the chapters of Threads , Generics and collection , I/O files.

I am revising and coding some ex but still if anyone can just guide about to study with this chapters.



Thank you.

Hey

Thanks a lot for the notes.

I would request you if can just upload all the chapters with the pdf format.

It would be comfortable for us to download and read them.

Hey the problem is solved.

Thank you.

I know the line

c instance of A ------------- is incorrect


Since class C do not extend A .

When i compile the code i get the error that they are inconvertible types which is fine.

But same code when i run means---------- java MyInstance --------- it gives me the desired output

Yes c is instance of B Yes c is instance of A

Which should not be obtained.

You can try:

First compile the code we get an error

In spite of the error run the code output is obtained.

I am not able to understand how come the code runs fine in spirte of compile error.

Hi all,
class A { } class B {} class C extends B {} public class MyInstance { public static void main(String args[]) { A ref; A a=new A(); B b=new B(); C c=new C(); ref=c; if(c instanceof B) System.out.println("Yes c is instance of B"); if(c instanceof A) System.out.println("Yes c is instance of A"); } }

Problem:

During compilation error called inconvertible types.

There is no relation between class A and class C.

Then c instance of A line seems to be false.

But when i run the code seems to be no error.

Thank you.

Hey ,

Even i would like to join.

I have just finished revising my chapters upto 5.

I am on 6 I/O which is very difficult for me .

Lets see how things work out.

Let me know.

Bye.

Hey Neha ,

Congrats for such a good score.

Good to have 96% .

But i think your concepts are crystal clear.

Because i know since i have gone through some of your explaination .

So best of luck for your interview.

Now enjoy the success.

i know that interface is used to just declare the methods but dont know what to implement .

In short abstract

But is my code correct ?

i had tried .

But i was not sure about instantiation related to static .

Thank you for clearing my doubt.

I think if the inner class is static i.e

if class B is static ?

even though it doesnt matter the

A.B ab = new A().new B()

Am i correct ?

Wouter Oet wrote:What happened when you compiled it?

After compiling error:

class, enum or interface expected ?

I had one mock question in which they had created an instantiated the interface

so i thought do objects of interface can be created ?

OK got it.

Thank you.

class A { class B {} } class test{ A.B ab = new A.B(); }


class B is the inner class of Class A

I want to instantiate the class B in the Class test

which means

i have to use dot operator as

outerClass.innerClass refVar = new outerClass.innerClass();

Its fine for one inner class

But what about if there is one more innerclass in B as

class A { class B { class C } } class test{ A.B ab = new A.B(); }

interface A{ } class animal implements A { A a = new A(); }

is the code correct ?