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Need Answers to Basic FAQ on Java

Posted on 2004-10-27
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Last Modified: 2010-03-31
hi, I need answeres to this Q ? pleaze

What is the relationship between a class and an object?

Discuss the difference between single and multiple inheritance. Why
would you choose one over the other?

What is a class library?

What does the term event-driven mean?

What is wrappering?

What is the difference between a class and a type?

How does Java control priorities and conflicts in multithreading?

What is an instance variable?

What is the highest class in Java?

How is threading used in Java?

Regards,
Hyd
0
Question by:princehyderabad
    8 Comments
     
    LVL 19

    Expert Comment

    by:ramazanyich
    homework ??
    0
     
    LVL 86

    Expert Comment

    by:CEHJ
    Sorry - we don't do homework here
    0
     

    Author Comment

    by:princehyderabad
    Need to prepare for interivew ? Thats it. Not a home work.
    0
     
    LVL 13

    Accepted Solution

    by:
    Class is a type, Object is an instance of this type

    Java has no multiple inheritance, u can extend one class and implement multiple interfaces

    Class library is the library of java classes accesable to ur Java application, it is a group of jar files each contains a group of reusable classes

    Event driven means when an event in ur application (like user hits a button) a call back method is called in ur registered class

    wrapping is hiding the complexty of calling Java components like EJB into a simple Java class called wrapper

    Class is a developer defined type

    refer to the J2SE specifications at java.sun.com to know who threads are managed and used

    A varaible is a refernce to an Instance

    Object is the hightest class in Java
    0
     
    LVL 86

    Expert Comment

    by:CEHJ
    >>Need to prepare for interivew ?

    Ah - they've given you the questions in advance - that was kind of them ;-)
    0
     

    Author Comment

    by:princehyderabad
    Thanks Petmagdy !!

    and Mr.CehJ knowledge increase by sharing.
    0
     

    Expert Comment

    by:secretcoder
    I hand out a list of questions to interviewees and then get on Experts Exchange and look for

      "How does Java control priorities and conflicts in multithreading"

    when I find it, I know I have a cheater.
    0
     
    LVL 86

    Expert Comment

    by:CEHJ
    >>I hand out a list of questions to interviewees

    Hmm. I suppose if this were a case in point, you'd have your man if you happened to have an interview candidate called 'Prince Hyderabad' (unless of course it was his competitor 'Mogul Jaipur' who was trying to discredit him who really posted the question...)
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