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Update Java style guide #163

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37 changes: 30 additions & 7 deletions javaguide.html
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Expand Up @@ -202,6 +202,11 @@ <h4 id="s3.3.3-import-ordering-and-spacing">3.3.3 Ordering and spacing</h4>



<h4 id="s3.3.4-import-class-not-static">3.3.4 No static import for classes</h4>

<p>Static import is not used for static nested classes. They are imported with
normal imports.</p>

<h3 id="s3.4-class-declaration">3.4 Class declaration</h3>

<a name="oneclassperfile"></a>
Expand Down Expand Up @@ -370,12 +375,17 @@ <h4 id="s4.5.1-line-wrapping-where-to-break">4.5.1 Where to break</h4>
the symbol. (Note that this is not the same practice used in Google style for other languages,
such as C++ and JavaScript.)
<ul>
<li>This also applies to the following "operator-like" symbols: the dot separator
(<code class="prettyprint lang-java">.</code>), the two colons of a method reference
(<code class="prettyprint lang-java">::</code>), the ampersand in type bounds
(<code class="prettyprint lang-java">&lt;T extends Foo &amp; Bar&gt;</code>), and the pipe in
catch blocks
(<code class="prettyprint lang-java">catch (FooException | BarException e)</code>).</li>
<li>This also applies to the following "operator-like" symbols:
<ul>
<li>the dot separator (<code class="prettyprint lang-java">.</code>)</li>
<li>the two colons of a method reference
(<code class="prettyprint lang-java">::</code>)</li>
<li>an ampersand in a type bound
(<code class="prettyprint lang-java">&lt;T extends Foo &amp; Bar&gt;</code>)</li>
<li>a pipe in a catch block
(<code class="prettyprint lang-java">catch (FooException | BarException e)</code>).</li>
</ul>
</li>
</ul>
</li>

Expand All @@ -392,6 +402,19 @@ <h4 id="s4.5.1-line-wrapping-where-to-break">4.5.1 Where to break</h4>

<li>A comma (<code class="prettyprint lang-java">,</code>) stays attached to the token that
precedes it.</li>

<li>A line is never broken adjacent to the arrow in a lambda, except that a
break may come immediately after the arrow if the body of the lambda consists
of a single unbraced expression. Examples:
<pre class="prettyprint lang-java">MyLambda&lt;String, Long, Object&gt; lambda =
(String label, Long value, Object obj) -&gt; {
...
};

Predicate&lt;String&gt; predicate = str -&gt;
longExpressionInvolving(str);
</pre>
</li>
</ol>

<p class="note"><strong>Note:</strong> The primary goal for line wrapping is to have clear
Expand Down Expand Up @@ -490,7 +513,7 @@ <h4 id="s4.6.2-horizontal-whitespace">4.6.2 Horizontal whitespace</h4>
<li>the two colons (<code class="prettyprint lang-java">::</code>) of a method reference, which
is written like <code class="prettyprint lang-java">Object::toString</code></li>
<li>the dot separator (<code class="prettyprint lang-java">.</code>), which is written like
<code class="prettyprint lang-java">object.toString()</code></li>
<code class="prettyprint lang-java">object.toString()</code></li>
</ul>
</li>

Expand Down