title: org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
body: <p>I have the following configuration in my spring bean.xml, when I run i get the ERROR: as mentioned below. I could not understand what the below configuration tag and use of it. where to specify the config.file </p>
  
  <pre><code>&lt;bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"&gt;
  &lt;property name="location"&gt;
      &lt;value&gt;file:#{ systemProperties['config.file']}&lt;/value&gt;
  &lt;/property&gt;
  </code></pre>
  
  <p> </p>
  
  <p>Error:
  Exception in thread "main" <code>org.springframework.beans.factory.BeanInitializationException: Could not load properties; nested exception is java.io.FileNotFoundException:</code> </p>