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Anything that goes across a network should be serialize-able:<br />
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<a href="http://mindprod.com/jgloss/serialization.html" rel="ugc">http://mindprod.com/jgloss/serialization.html</a>
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Anything that goes across a network should be serialize-able:

http://mindprod.com/jgloss/serialization.html [http://mindprod.com/jgloss/serialization.html]

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During pooling of bean instances, if the maximum pool size is exceeded, then the container saves some of the beans onto the disk to allow for new instances. Now when a bean which has been saved onto the disk is called for, the container reconstructs the bean from the secondary storage. To do this it might also need to persist an existing bean which is not being used. <br />
The persistance of beans requires all bean and bean related objects to implement serializable.
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During pooling of bean instances, if the maximum pool size is exceeded, then the container saves some of the beans onto the disk to allow for new instances. Now when a bean which has been saved onto the disk is called for, the container reconstructs the bean from the secondary storage. To do this it might also need to persist an existing bean which is not being used.
The persistance of beans requires all bean and bean related objects to implement serializable.

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so the 2 reasons for serizable: remote deployment, &amp;&nbsp;persist the &nbsp;bean to secondary storage.<br />
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so the 2 reasons for serizable: remote deployment, & persist the  bean to secondary storage.



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<div class="content wysiwyg-content">
why Entity bean's primary key class must implement Serializable?<br />
<br />
what Serializable is used for?
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why Entity bean's primary key class must implement Serializable?

what Serializable is used for?

Entity bean's primary key class must implement Serializable?

Java Enterprise Edition (Java EE) is a specification defining a collection of Java-based server and client technologies and how they interoperate. Java EE specifies server and client architectures and uses profiles to define technology sets targeted at specific classes of applications. All Java EE profiles share a set of common features, such as naming and resource injection, packaging rules and security requirements.

Java EE

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.