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Problem in making Model class singleton  RSS feed

 
MaheshS Kumbhar
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I have following action class





I have following Employee model class





I have marked the no-argument constructor of Employee class as private as I want to make it singleton.
I have a form page asking username and password (with form field names emp.name and emp.password) that is mapped to Login.java Action. But when I submit form, I get an exception that saying it cannot create Employee object as its constructor is marked as private.
So how do I solve this problem still keeping the Employee object as singleton?
 
James Peter
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Hi,

I prefer to use modeldrivenaction.

http://www.vaannila.com/struts-2/struts-2-example/struts-2-model-driven-action-example-1.html

For Singleton please check below site

http://www.javadb.com/how-to-create-a-singleton-object
 
Joe Ess
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MaheshS Kumbhar wrote:
So how do I solve this problem still keeping the Employee object as singleton?


Why would you do such a thing? Are you going to have an application where only one person ever logs in?
You should also be aware that the Singleton design pattern is considered evil.
 
It is sorta covered in the JavaRanch Style Guide.
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