java generics

2010-03-29  来源:本站原创  分类:Java  人气:240 

Today, when reading the code jbpm4.3 to see this code:

public <T> T get(Class<T> type) {
    return processEngineWireContext.get(type);
  }

Was very strange to see jiava generic information on the Internet, most generics are defined in the class declaration, rather than means, in the hard-line colleagues help to find two relevant information, to be concluded as follows:
Generic is divided into two types: generic class with generic methods used in the generic "type," declared the need for places in the previous example,
<T>: Statement Generic T
T: Return value of type T
Class <T>: equivalence and T.getClass ()

Related to the following address:
http://zhidao.baidu.com/question/91483548.html
http://book.51cto.com/art/200903/114773.htm
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