== Why is this an issue?

In applications where the accepted practice is to log an ``++Exception++`` and then rethrow it, you end up with miles-long logs that contain multiple instances of the same exception. In multi-threaded applications debugging this type of log can be particularly hellish because messages from other threads will be interwoven with the repetitions of the logged-and-thrown ``++Exception++``. Instead, exceptions should be either logged or rethrown, not both.


=== Noncompliant code example

[source,text]
----
catch (SQLException e) {
  ...
  LOGGER.log(Level.ERROR,  contextInfo, e);
  throw new MySQLException(contextInfo, e);
}
----


=== Compliant solution

[source,text]
----
catch (SQLException e) {
  ...
  throw new MySQLException(contextInfo, e);
}
----
or 

[source,text]
----
catch (SQLException e) {
  ...
  LOGGER.log(Level.ERROR,  contextInfo, e);
  // handle exception...
}
----