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<h2 title="Class CommandLine.RunLast" class="title">Class CommandLine.RunLast</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li>picocli.CommandLine.RunLast</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../picocli/CommandLine.IParseResultHandler.html" title="interface in picocli">CommandLine.IParseResultHandler</a></dd>
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<dl>
<dt>Enclosing class:</dt>
<dd><a href="../picocli/CommandLine.html" title="class in picocli">CommandLine</a></dd>
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<br>
<pre>public static class <span class="strong">CommandLine.RunLast</span>
extends java.lang.Object
implements <a href="../picocli/CommandLine.IParseResultHandler.html" title="interface in picocli">CommandLine.IParseResultHandler</a></pre>
<div class="block">Command line parse result handler that prints help if requested, and otherwise executes the most specific
<code>Runnable</code> or <code>Callable</code> subcommand.
For use in the <a href="../picocli/CommandLine.html#parseWithHandlers(picocli.CommandLine.IParseResultHandler,%20java.io.PrintStream,%20picocli.CommandLine.Help.Ansi,%20picocli.CommandLine.IExceptionHandler,%20java.lang.String...)"><code>parseWithHandler</code></a> methods.
<p>
Something like this:</p>
<pre>
// RunLast implementation: print help if requested, otherwise execute the most specific subcommand
if (CommandLine.printHelpIfRequested(parsedCommands, System.err, Help.Ansi.AUTO)) {
return emptyList();
}
CommandLine last = parsedCommands.get(parsedCommands.size() - 1);
Object command = last.getCommand();
if (command instanceof Runnable) {
try {
((Runnable) command).run();
} catch (Exception ex) {
throw new ExecutionException(last, "Error in runnable " + command, ex);
}
} else if (command instanceof Callable) {
Object result;
try {
result = ((Callable) command).call();
} catch (Exception ex) {
throw new ExecutionException(last, "Error in callable " + command, ex);
}
// ...do something with result
} else {
throw new ExecutionException(last, "Parsed command (" + command + ") is not Runnable or Callable");
}
</pre></div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>2.0</dd></dl>
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<td class="colOne"><code><strong><a href="../picocli/CommandLine.RunLast.html#CommandLine.RunLast()">CommandLine.RunLast</a></strong>()</code> </td>
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<td class="colFirst"><code>java.util.List<java.lang.Object></code></td>
<td class="colLast"><code><strong><a href="../picocli/CommandLine.RunLast.html#handleParseResult(java.util.List,%20java.io.PrintStream,%20picocli.CommandLine.Help.Ansi)">handleParseResult</a></strong>(java.util.List<<a href="../picocli/CommandLine.html" title="class in picocli">CommandLine</a>> parsedCommands,
java.io.PrintStream out,
<a href="../picocli/CommandLine.Help.Ansi.html" title="enum in picocli">CommandLine.Help.Ansi</a> ansi)</code>
<div class="block">Prints help if requested, and otherwise executes the most specific <code>Runnable</code> or <code>Callable</code> subcommand.</div>
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<h4>CommandLine.RunLast</h4>
<pre>public CommandLine.RunLast()</pre>
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<h4>handleParseResult</h4>
<pre>public java.util.List<java.lang.Object> handleParseResult(java.util.List<<a href="../picocli/CommandLine.html" title="class in picocli">CommandLine</a>> parsedCommands,
java.io.PrintStream out,
<a href="../picocli/CommandLine.Help.Ansi.html" title="enum in picocli">CommandLine.Help.Ansi</a> ansi)</pre>
<div class="block">Prints help if requested, and otherwise executes the most specific <code>Runnable</code> or <code>Callable</code> subcommand.
If the last (sub)command does not implement either <code>Runnable</code> or <code>Callable</code>, a <code>ExecutionException</code>
is thrown detailing the problem and capturing the offending <code>CommandLine</code> object.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../picocli/CommandLine.IParseResultHandler.html#handleParseResult(java.util.List,%20java.io.PrintStream,%20picocli.CommandLine.Help.Ansi)">handleParseResult</a></code> in interface <code><a href="../picocli/CommandLine.IParseResultHandler.html" title="interface in picocli">CommandLine.IParseResultHandler</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>parsedCommands</code> - the <code>CommandLine</code> objects that resulted from successfully parsing the command line arguments</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>
<dt><span class="strong">Returns:</span></dt><dd>an empty list if help was requested, or a list containing a single element: the result of calling the
<code>Callable</code>, or a <code>null</code> element if the last (sub)command was a <code>Runnable</code></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../picocli/CommandLine.ExecutionException.html" title="class in picocli">CommandLine.ExecutionException</a></code> - if a problem occurred while processing the parse results; use
<a href="../picocli/CommandLine.ExecutionException.html#getCommandLine()"><code>CommandLine.ExecutionException.getCommandLine()</code></a> to get the command or subcommand where processing failed</dd></dl>
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