mmandLine.IParameterExceptionHandler</a></th>
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<div class="block">Classes implementing this interface know how to handle <code>ParameterExceptions</code> (usually from invalid user input).</div>
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<th class="colFirst" scope="row"><a href="CommandLine.IParameterPreprocessor.html" title="interface in picocli">CommandLine.IParameterPreprocessor</a></th>
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<div class="block">Options, positional parameters and commands can be assigned a <code