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Update Java Style Guide to latest #946

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27 changes: 25 additions & 2 deletions javaguide.html
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Original file line number Diff line number Diff line change
Expand Up @@ -183,7 +183,12 @@ <h3 id="s3.1-copyright-statement">3.1 License or copyright information, if prese
<a id="s3.2-package-statement"></a>
<h3 id="s3.2-package-declaration">3.2 Package declaration</h3>

<p>The package declaration is <strong>not line-wrapped</strong>. The column limit (Section 4.4,
<p>Every source file must have a package declaration. <a href="https://openjdk.org/jeps/512">
Compact source files</a> are not used. (This rule obviously does not apply to
<code>module-info.java</code> files, which have a different syntax that does not include a
package declaration.)

</p><p>The package declaration is <strong>not line-wrapped</strong>. The column limit (Section 4.4,
<a href="#s4.4-column-limit">Column limit: 100</a>) does not apply to package declarations.</p>

<a id="imports"></a>
Expand All @@ -194,6 +199,16 @@ <h4 id="s3.3.1-wildcard-imports">3.3.1 No wildcard imports</h4>
<p><strong>Wildcard ("on-demand") imports</strong>, static or otherwise, <strong>are not
used</strong>.</p>

<h4 id="s3.3.1.1-module-imports">3.3.1.1 No module imports</h4>

<p><a href="https://docs.oracle.com/en/java/javase/25/language/module-import-declarations.html">
Module imports</a> <strong>are not used</strong>.</p>

<p>Example:</p>

<pre class="prettyprint lang-java">import module java.base;
</pre>

<h4 id="s3.3.2-import-line-wrapping">3.3.2 No line-wrapping</h4>

<p>Imports are <strong>not line-wrapped</strong>. The column limit (Section 4.4,
Expand Down Expand Up @@ -1111,6 +1126,14 @@ <h4 id="s5.2.8-type-variable-names">5.2.8 Type variable names</h4>
<code class="prettyprint lang-java">FooBarT</code>).</li>
</ul>

<h4 id="s5.2.9-unnamed-variables">5.2.9 Unnamed variables</h4>

<p>The <code class="prettyprint lang-java">_</code> syntax for unnamed variables and parameters is
allowed wherever it is applicable. For example:</p>

<pre class="prettyprint lang-java">Predicate&lt;String&gt; alwaysTrue = _ -&gt; true;
</pre>

<a id="acronyms"></a>
<a id="camelcase"></a>
<h3 id="s5.3-camel-case">5.3 Camel case: defined</h3>
Expand Down Expand Up @@ -1232,7 +1255,7 @@ <h3 id="s6.2-caught-exceptions">6.2 Caught exceptions: not ignored</h3>
<pre class="prettyprint lang-java">try {
int i = Integer.parseInt(response);
return handleNumericResponse(i);
} catch (NumberFormatException ok) {
} catch (NumberFormatException _) {
// it's not numeric; that's fine, just continue
}
return handleTextResponse(response);
Expand Down