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Constructor in Hibernate persistent class.

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hbnusr

Post subject: Constructor in Hibernate persistent class.

Posted: Thu Jul 06, 2006 12:06 am

Newbie

Joined: Wed Jun 28, 2006 1:03 am
Posts: 14

Trying to understand the Hibernate Reference Doc :

In the doc, Section 4.1.1 (Hibernate Reference Documentation Version: 3.1.3 link : http://www.hibernate.org/hib_docs/v3/reference/en/html_single/#persistent-classes-pojo ), there are these sentences/statements :

Quote:

There are four main rules to follow here...
4.1.1. Implement a no-argument constructor
Cat has a no-argument constructor. All persistent classes must have a default constructor (which may be nonpublic) so that Hibernate can instantiate them using Constructor.newInstance().

But I can't find the fore-mentioned constructor in the whole of the Cat.java class code.

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frusso

Post subject:

Posted: Thu Jul 06, 2006 12:12 am

Beginner

Joined: Tue Jun 28, 2005 2:43 pm
Posts: 29
Location: Silicon Valley

It's implicit. Cat extends Object, which has a no-arg constructor. If you define no other constructor, Java implicitly defines a no-arg constructor.

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