title: Extending a class that implements Serializable
body: <p>If I extend a class that implements Serializable, do I need that class to also implement Serializable?</p>
  
  <p>For instance if I have,</p>
  
  <pre><code>public class classToBeExtended implements Serializable
  </code></pre>
  
  <p>Then will this suffice?</p>
  
  <pre><code>public class classThatWillExtend extends classToExtended
  </code></pre>
  
  <p>Or do I need to do this?</p>
  
  <pre><code>public class classThatWillExtend extends classToExtended implements Serializable
  </code></pre>