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<h2 title="Interface CommandLine.IExceptionHandler" class="title">Interface CommandLine.IExceptionHandler</h2>
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<dt>All Known Implementing Classes:</dt>
<dd><a href="../picocli/CommandLine.DefaultExceptionHandler.html" title="class in picocli">CommandLine.DefaultExceptionHandler</a></dd>
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<dt>Enclosing class:</dt>
<dd><a href="../picocli/CommandLine.html" title="class in picocli">CommandLine</a></dd>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>
<div class="block"><span class="deprecationComment">Use <a href="../picocli/CommandLine.IExceptionHandler2.html" title="interface in picocli"><code>CommandLine.IExceptionHandler2</code></a> instead.</span></div>
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<br>
<pre>@Deprecated
public static interface <span class="typeNameLabel">CommandLine.IExceptionHandler</span></pre>
<div class="block">Represents a function that can handle a <code>ParameterException</code> that occurred while
<a href="../picocli/CommandLine.html#parse-java.lang.String...-">parsing</a> the command line arguments. This is a
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/package-summary.html">functional interface</a>
whose functional method is <a href="../picocli/CommandLine.IExceptionHandler.html#handleException-picocli.CommandLine.ParameterException-java.io.PrintStream-picocli.CommandLine.Help.Ansi-java.lang.String...-"><code>handleException(CommandLine.ParameterException, PrintStream, CommandLine.Help.Ansi, String...)</code></a>.
<p>
Implementations of this function can be passed to the <a href="../picocli/CommandLine.html#parseWithHandlers-picocli.CommandLine.IParseResultHandler-java.io.PrintStream-picocli.CommandLine.Help.Ansi-picocli.CommandLine.IExceptionHandler-java.lang.String...-"><code>CommandLine::parseWithHandlers</code></a>
methods to handle situations when the command line could not be parsed.
</p></div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.0</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../picocli/CommandLine.DefaultExceptionHandler.html" title="class in picocli"><code>CommandLine.DefaultExceptionHandler</code></a></dd>
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<td class="colFirst"><code>java.util.List<java.lang.Object></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../picocli/CommandLine.IExceptionHandler.html#handleException-picocli.CommandLine.ParameterException-java.io.PrintStream-picocli.CommandLine.Help.Ansi-java.lang.String...-">handleException</a></span>(<a href="../picocli/CommandLine.ParameterException.html" title="class in picocli">CommandLine.ParameterException</a> ex,
java.io.PrintStream out,
<a href="../picocli/CommandLine.Help.Ansi.html" title="enum in picocli">CommandLine.Help.Ansi</a> ansi,
java.lang.String... args)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span> </div>
<div class="block">Handles a <code>ParameterException</code> that occurred while <a href="../picocli/CommandLine.html#parse-java.lang.String...-">parsing</a> the command
line arguments and optionally returns a list of results.</div>
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<h4>handleException</h4>
<pre>java.util.List<java.lang.Object> handleException(<a href="../picocli/CommandLine.ParameterException.html" title="class in picocli">CommandLine.ParameterException</a> ex,
java.io.PrintStream out,
<a href="../picocli/CommandLine.Help.Ansi.html" title="enum in picocli">CommandLine.Help.Ansi</a> ansi,
java.lang.String... args)</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span> </div>
<div class="block">Handles a <code>ParameterException</code> that occurred while <a href="../picocli/CommandLine.html#parse-java.lang.String...-">parsing</a> the command
line arguments and optionally returns a list of results.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ex</code> - the ParameterException describing the problem that occurred while parsing the command line arguments,
and the CommandLine representing the command or subcommand whose input was invalid</dd>
<dd><code>out</code> - the <code>PrintStream</code> to print help to if requested</dd>
<dd><code>ansi</code> - for printing help messages using ANSI styles and colors</dd>
<dd><code>args</code> - the command line arguments that could not be parsed</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a list of results, or an empty list if there are no results</dd>
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