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From: Jeff Higgins <jeff@invalid.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: FindBugs complaining about non-serializable field although everything looks Serializable
Date: Thu, 12 Jan 2012 12:04:52 -0500
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On 01/12/2012 11:40 AM, laredotornado@zipmail.com wrote:
> Hi,
>
> I'm using Java 1.6.  My FindBugs tool is giving me this error ...
>
>
>      Non-transient non-serializable instance field in serializable

?<http://findbugs.sourceforge.net/bugDescriptions.html#SE_BAD_FIELD>

> class
>      Class com.myco.clearing.common.xml.Node defines non-transient non-
> serializable instance field children
>
>
> The class and its private fields that Findbugs is complaining about
> are below ...
>
>
>      public class Node implements Serializable, Comparable<Node>,
> Cloneable {
> 	/**
> 	 * For serializable classes.
> 	 */
> 	private static final long serialVersionUID = 1L;
>
> 	/**
> 	 * Unique id
> 	 */
> 	private long id;
> 	/**
> 	 * Node Name
> 	 */
> 	private String name;
> 	/**
> 	 * Node value
> 	 */
> 	private String value = "";
> 	/**
> 	 * Child nodes
> 	 */
> 	private List<Node>  children;
> 	/**
> 	 * Parent node
> 	 */
> 	private Node parent;
> 	/**
> 	 * Node attributes
> 	 */
> 	private List<Attribute>  attributes;
>
>
> I have a public, no-argument constructor and getter/setter methods for
> all the fields you see (except serialVersionUID).  Any ideas why
> FindBugs is complaining about the field "children" or how I can
> troubleshoot this further?
>
> The above references a class, "Attribute".  The relevant parts are
> below.  Same thing -- a public, no-argument constructor and getter/
> setter methods present.
>
>
>      public class Attribute implements Serializable, Cloneable {
>
> 	/**
> 	 * For serializable classes.
> 	 */
> 	private static final long serialVersionUID = 1L;
>
> 	/**
> 	 * Attribute Name
> 	 */
> 	private String name;
> 	/**
> 	 * Attribute value, can be local or inherited
> 	 */
> 	private String value;
> 	/**
> 	 * Node having this attribute
> 	 */
> 	private Node node;
>
>
> Thanks, - Dave