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You can if you prefer let the operating system generate temporary file names in the directory specifying an optional prefix and suffix.

Filtering inbound files

You cna configure a java.io.FileFilter to only accept certain files when polling.
This can be done by configuring the filter property on the poller:

<bean class="o.a.s.components.file.FilePoller">
  <property name="filter">
    <bean ... />
  </property>
</bean>

The Jakarta ORO project contains RegExp based filters, but you can also define your own filters by implementing java.io.FileFilter.