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    <p><code>clone()</code> makes a shallow clone - it copies only the first level of fields. You should avoid using <code>clone()</code> and <code>Cloneable</code>, because it is very hard to implement it correctly, and it is very likely that something will be broken, although not immediately visible. See <a href="http://www.artima.com/intv/bloch13.html" rel="noreferrer">what Joshua Bloch</a> says about this.</p> <p>If you want deep copy - i.e. the whole object hierarchy being cloned, I can suggest two options:</p> <ul> <li>if your objects implements <code>Serializable</code>, use <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/SerializationUtils.html#clone%28java.io.Serializable%29" rel="noreferrer"><code>SerializationUtils.clone(..)</code></a> (from <a href="http://commons.apache.org/lang/" rel="noreferrer">commons-lang</a>)</li> <li>if it's not serializable, then try <a href="http://robust-it.co.uk/clone/" rel="noreferrer">java deep cloning library</a></li> </ul> <p>If however, you want shallow copy - i.e. you still want all your fields copied to a new object, but the fields, and the fields' fields (etc..) point to their original values, then you can use <a href="http://commons.apache.org/beanutils/v1.8.3/apidocs/org/apache/commons/beanutils/BeanUtils.html#cloneBean%28java.lang.Object%29" rel="noreferrer"><code>BeanUtils.clone(..)</code></a> (from <a href="http://commons.apache.org/beanutils/" rel="noreferrer">commons-beanutils</a>)</p> <p>Apart from the cloning matter - having 100 member variables isn't a good sign. Consider splitting your class into multiple classes (update: and multiple tables, using foreign keys. Of course, if that is applicable. If these are truly properties of the same object, then fine)</p>
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    1. COI removed the wording "deep clone" from my post as I dont think this is what I meant. I just need the member variables copied over.
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    2. COwell, then my suggestion about the shallow copy holds ;)
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    3. COclone() worked as expected. I guess I need to revisit why this is so recommended against.
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