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Why not array of parameterized type?

 
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Hi,



Please tell the reason behind!

EDIT: [Question corrected!]
Thanks,
cmbhatt

[ April 24, 2007: Message edited by: Chandra Bhatt ]
[ April 24, 2007: Message edited by: Barry Gaunt ]
 
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from my knowledge ,

its like this :


List<String> lst = new ArrayList<String>[10];

one list reference cannot hold 10 arrayList
 
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Hi Chandra,

List<String> lst = new ArrayList<String>[10]; //compiler error, WHY?

Correction to your question:

List<String>[] lst = new ArrayList<String>[10]; //compiler error, WHY?


Here the Thing is Array's will remebers the type of element at runtime. Thats why They can throw ArrayStoreExxption when ever any mismatch found.
Like

Animal [] a = new Dog[10];
a[0] =new Cat(); // This Throws ArrayStoreException why becuase Arrays will rememer the type at runtime.


But

In case genric arrays. Array behavior will be compromised. Which is restricted by compiler. In case of genric arrays "ArrayStoreException" can't be thrown bec'ze of type erasure for generics. Thats why the creation of genric arrays was restricted at compile time
[ April 24, 2007: Message edited by: Srinivasan thoyyeti ]
 
Chandra Bhatt
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Here the Thing is Array's will remebers the type of element at runtime. Thats why They can throw ArrayStoreExxption when ever any mismatch found.




In case genric arrays. Array behavior will be compromised. Which is restricted by compiler. In case of genric arrays "ArrayStoreException" can't be thrown bec'ze of type erasure for generics.



Wow Srini,
Have this "beer" . Its for you!



Thanks,
cmbhatt
 
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Angelika Langer's Generics FAQ
 
Barry Gaunt
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This:

Animal [] a = new Dog[10];
a.add(new Cat()); // This Throws ArrayStoreException why becuase Arrays will rememer the type at runtime.



looks like nonsense to me.
 
Barry Gaunt
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Ah, it's been changed.
 
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