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generics

 
Greenhorn
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I am confused about when should we use wildcard (<?> and when should we use type parameters(<T> ? Can someone show me with examples?
 
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Hi

When to use this <?> ?

If you don't want others to put some thing on your collection.Then we have to use this.

For this (<T> Check API once.You will come to know.


Thanks

Anil Kumar
 
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Howdy Krishna!

One question that arises is: when should I use generic methods, and when should I use wildcard types?


The quote is from Gilad Bracha.
See here:
http://java.sun.com/docs/books/tutorial/extra/generics/methods.html

There is also a PDF of this whole article, must be here:
http://java.sun.com/j2se/1.5/pdf/generics-tutorial.pdf




Yours,
Bu.
 
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