java - What are attributes? -

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Can someone explain the definitions of attributes?

For example, in the following code, what is a feature: 

  request.setAttribute ("ja", new foo.Employee ());

Is the attribute in the above code an object of foo.Employee (), or is this key / value added, or is it really "ja"?

filter, servlet, JSPP, and further , for example, you have an object in the push servlet and bridge can in a JSP

The same approach is for sessions and application scopes


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