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POCopy all values from fields in one class to another through reflection
 

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    <p>I have a class which is basically a copy of another class.</p> <pre><code>public class A { int a; String b; } public class CopyA { int a; String b; } </code></pre> <p>What I am doing is putting values from class <code>A</code> into <code>CopyA</code> before sending <code>CopyA</code> through a webservice call. Now I would like to create a reflection-method that basically copies all fields that are identical (by name and type) from class <code>A</code> to class <code>CopyA</code>.</p> <p>How can I do this?</p> <p>This is what I have so far, but it doesn't quite work. I think the problem here is that I am trying to set a field on the field I am looping through.</p> <pre><code>private &lt;T extends Object, Y extends Object&gt; void copyFields(T from, Y too) { Class&lt;? extends Object&gt; fromClass = from.getClass(); Field[] fromFields = fromClass.getDeclaredFields(); Class&lt;? extends Object&gt; tooClass = too.getClass(); Field[] tooFields = tooClass.getDeclaredFields(); if (fromFields != null &amp;&amp; tooFields != null) { for (Field tooF : tooFields) { logger.debug("toofield name #0 and type #1", tooF.getName(), tooF.getType().toString()); try { // Check if that fields exists in the other method Field fromF = fromClass.getDeclaredField(tooF.getName()); if (fromF.getType().equals(tooF.getType())) { tooF.set(tooF, fromF); } } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (NoSuchFieldException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAccessException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } </code></pre> <p>I am sure there must be someone that has already done this somehow</p>
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    1. USJoe
    1. USShervin Asgari
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    1. COSee also http://stackoverflow.com/questions/1432764/any-tool-for-java-object-to-object-mapping
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      1. USRuben Bartelink
 

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