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<blockquote>
PropertyUtils is written using java reflection api and provides you ability to modify properties of Java object at runtime. 
</blockquote>
 
In the link 
&nbsp;<a href="http://javarevisited.blogspot.com/2012/04/java-propertyutils-example-getting-and.html" rel="ugc">http://javarevisited.blogspot.com/2012/04/java-propertyutils-example-getting-and.html</a> 
it was mentioned as below 

<blockquote>
Remember we don’t know anything about Object on compile time. On runtime Object is provided to program along with name of property to retrieve or modify: 
 
Read more: <a href="http://javarevisited.blogspot.com/2012/04/java-propertyutils-example-getting-and.html#ixzz2uX3g47Zr" rel="ugc">http://javarevisited.blogspot.com/2012/04/java-propertyutils-example-getting-and.html#ixzz2uX3g47Zr</a> 

</blockquote>
 
 
 
 
Why we do not know anything about object at compile time but &nbsp;runtime Object is provided to program along with name of property to retrieve or modify. 
 
I am not clear on those statements. 
I ran above program in the javarevisited link, I got output as below 
PropertyUtils Example property value: blue 
 
what is the meaning of output 
 
I see we are setting and getting colr from PropertyUtils 
&nbsp; &nbsp; 
<blockquote>
 &nbsp; //here color and blue strings can come from variety or sources 
&nbsp; &nbsp; &nbsp; &nbsp; //e.g. configuration files, database, any upstream system or via HTTP Request 
&nbsp; &nbsp; &nbsp; &nbsp; PropertyUtils.setProperty(flexiColor, &quot;color&quot;, &quot;blue&quot;); 
&nbsp; &nbsp; &nbsp; &nbsp; String value = (String) PropertyUtils.getProperty(flexiColor, &quot;color&quot;); 
&nbsp; &nbsp; &nbsp; &nbsp; System.out.println(&quot;PropertyUtils Example property value: &quot;&nbsp;+ value);
</blockquote>
 
How is it different from regular getter and setter from a bean. 
 

<blockquote>
 &nbsp;PropertyUtils.setProperty(flexiColor, &quot;color&quot;, &quot;blue&quot;);
</blockquote>
 
Where is this setter defined. 
 
please advise
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I see code as below 
 
&nbsp; &nbsp; PropertyUtils.getPropertyDescriptor(obj, fieldName).getWriteMethod().invoke(obj, list); 
 
What is the meaning of above code while parsing a text document which has not only primitives but also list kind of objects before sending to one other system. 
please advise
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How the reflection on class, method, field are different. 
Any practical example to understand this reflection concept end to end better with set up on eclipse. please advise
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<div class="content wysiwyg-content">
Hi, 
 
I am going through below link on property utils 
 
<a href="http://commons.apache.org/proper/commons-beanutils/apidocs/org/apache/commons/beanutils/PropertyUtils.html#getPropertyDescriptor(java.lang.Object" rel="ugc">http://commons.apache.org/proper/commons-beanutils/apidocs/org/apache/commons/beanutils/PropertyUtils.html#getPropertyDescriptor(java.lang.Object</a> 
 
 
What for they used and why and when. How they are related to collections. 
please advise 
Any links resources ideas highly appreciated. Thanks in advance
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</div>

Hi,

I am going through below link on property utils

http://commons.apache.org/proper/commons-beanutils/apidocs/org/apache/commons/beanutils/PropertyUtils.html#getPropertyDescriptor(java.lang.Object


What for they used and why and when. How they are related to collections.
please advise
Any links resources ideas highly appreciated. Thanks in advance

PropertyUtils  java

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.

Java

JavaServer Pages (JSP) allow the development of dynamically generated web pages. It uses the Java programming language; JSP pages are translated into servlets at runtime, with each servlet being cached and reused until the JSP is modified. JSP allows Java code to be interleaved with static web markup content, so the resulting page can be compiled and executed on the server to deliver the content.