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POAutomatically generating equals and hashCode in Eclipse that is aware of @NonNull annotations
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  1. POAutomatically generating equals and hashCode in Eclipse that is aware of @NonNull annotations
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    copied!<p>Is there a way to configure Eclipse to automatically generate <code>hashCode</code> and <code>equals</code> with awareness of <code>@NonNull</code> annotations? Currently my Eclipse generates the code with unnecessary <code>null</code> checks, even on fields that are marked <code>@NonNull</code>.</p> <hr> <p>Note that FindBugs will raise warnings that <a href="http://findbugs.sourceforge.net/bugDescriptions.html#RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE" rel="nofollow noreferrer">these null checks are redundant</a>. Of course we can add <code>@edu.umd.cs.findbugs.annotations.SuppressWarnings("RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE")</code> to the methods, but that seems to undermine the role of FindBugs and <code>@NonNull</code> in the first place.</p> <p>It looks to me that the best solution is to have Eclipse be aware of JSR 305 and generate <code>equals</code> and <code>hashCode</code> accordingly without <code>null</code> checks (and if they are <code>null</code> anyway then so be it and let a <code>NullPointerException</code> be thrown naturally, because a contract violation has occurred).</p> <p>Short of that, having a way to customize the <code>equals</code> and <code>hashCode</code> template generated by Eclipse would also be nice.</p> <h3>Related questions</h3> <ul> <li><a href="https://stackoverflow.com/questions/802825/make-eclipse-equals-hashcode-use-getters">make Eclipse equals() / hashCode() use getters </a></li> <li><a href="https://stackoverflow.com/questions/281121/is-it-possible-to-make-eclipse-generate-hashcode-and-equals-with-hashcodebuilder">Is it possible to make eclipse generate hashCode and equals with HashCodeBuilder and EqualsBuilder </a></li> </ul>
 

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