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Calling setters on abstract class

Posted on 2009-07-03
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Last Modified: 2013-11-24
Hi,

In my code I am instantiating an abstract class need to call the setters on that class. How can I call the setters on the class in a generic form without knowing the name of the setter.

Here is an example of what  I mean:


      Class clazz = Class.forName(getClassName());
      if (clazz!=null)
        Entity entity = (Entity)clazz.newInstance();

At runtime will know the name of the field I want to set, eg "Description". I know that there will be an associated setter named setDescription(String desc). But since I will not know this until runtimes I can't code this right now. Basically in pseudocode I would would do it like this for a field named "Description".

String fieldName = "Description";

Method method = "set" + fieldName;

entity."method"(value);

But how to do this ?

I'm guessing I should be able to do this using reflection but since I have no experience with reflection I'm not sure how to proceed.

Thanks for any advice.

Chris



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Question by:ChrisOz2008
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Accepted Solution

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ksivananth earned 500 total points
ID: 24771603
Method[] methods = clazz.getMethods() will return all the methods

methods[0].getName() will give the name of the method, you can check if the name start with "set".

then invoke the method,

methods[0].invoke( entity, yourValue ) ;
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