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class declaration with parameter type

Harshana Dias
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Joined: Jun 11, 2007
Posts: 327
Why are we declare class like and the advantage or usage of it?

public class Sample<E> {
}

Whats does E refer to?
Seetharaman Venkatasamy
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Joined: Jan 28, 2008
Posts: 5575

It is called as Generics
Harshana Dias
Ranch Hand

Joined: Jun 11, 2007
Posts: 327
Seetharaman Venkatasamy wrote:It is called as Generics


yer but why should we need to declare it in class level. And what is E means. If its for a object declare a generic type make scenes like below, but for a class?

Jeff Verdegan
Bartender

Joined: Jan 03, 2004
Posts: 6109
    
    6

Harshana Dias wrote:
yer but why should we need to declare it in class level. And what is E means. If its for a object declare a generic type make scenes like below, but for a class?


If you click the link that was provided in the first reply, or google for java generics tutorial, those questions will be answered.
 
 
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