*1. What is Java Immutable class.?*
An immutable class is one whose object of that class is created, it cannot
be modified
*2. Write a java Immutable class.*
public final class MyOwnImmutableClass{
private final name;
public String getName(){return name;}
}
That is it! To make a class immutable, ensure the class is final, hence
cannot be extended, the fields are final hence cannot be modified and no
setter method should be provided to such class.
*3. Advantages of java Immutable class.*
One major advantage of immutable classes is that they are thread safe.
Could be shared between multiple threads
*4. Disadvantages of java Immutable class. *
In extreme cases, they could slow down . Read this stack overflow for more
on this ==>
http://stackoverflow.com/questions/752280/downsides-to-immutable-objects-in-java
*5. Any impact of Java Immutable class on Performance ? *
Well, both the advantageous and disadvantageous characteristics impact your
class performance.
*6.If you have any other points on Java Immutable class.please advise.*
My advice, might not worth it, I haven't seen this used in most of my
coding. So, I can't advice you much on it. Perhaps, other more experienced
developers could shed more light on practical application of immutable
classes. I only use the String and wrapper classes in Java for my needs.
Never bothered to write mine in real applications.
On Fri, Jul 3, 2015 at 6:48 PM, Deepak A L <[email protected]> wrote:
> hi pple
> i have below queries
>
> 1. What is Java Immutable class.?
> 2. Write a java Immutable class.
> 3. Advantages of java Immutable class.
> 4. Disadvantages of java Immutable class.
> 5. Any impact of Java Immutable class on Performance ?
> 6.If you have any other points on Java Immutable class.please advise.
>
> Regards,
> Deepak
>
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