anchor.diff:  is initialized, they can be kept as instance variables and be reused. The following
   example shows how to define such a class:
   
  +====
   [source,java,indent=0]
   [subs="verbatim,quotes"]
   ----
  
positive.code: 
  The following example shows the corresponding XML configuration:
  
  [source,java,indent=0]
  [subs="verbatim,quotes"]
  ----
  
negative.code: 
  	<context:property-placeholder location="jdbc.properties"/>
  ----
  ====
  
  The next two examples show the basic connectivity and configuration for DBCP and C3P0.
  To learn about more options that help control the pooling features, see the product
  