docs: update docs/java.md. (#601) 1b9437656d

docs/java.html

@@ -158,7 +158,7 @@
 </span><span class="code-line"><span class="token comment">// byte&#x3C;short&#x3C;int&#x3C;long&#x3C;float&#x3C;double</span>
 </span><span class="code-line"><span class="token keyword">int</span> i <span class="token operator">=</span> <span class="token number">10</span><span class="token punctuation">;</span>
 </span><span class="code-line"><span class="token keyword">long</span> l <span class="token operator">=</span> i<span class="token punctuation">;</span>               <span class="token comment">// 10</span>
-</span><span class="code-line"><span class="token comment">// Narrowing </span>
+</span><span class="code-line"><span class="token comment">// Narrowing</span>
 </span><span class="code-line"><span class="token keyword">double</span> d <span class="token operator">=</span> <span class="token number">10.02</span><span class="token punctuation">;</span>
 </span><span class="code-line"><span class="token keyword">long</span> l <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token keyword">long</span><span class="token punctuation">)</span>d<span class="token punctuation">;</span>         <span class="token comment">// 10</span>
 </span><span class="code-line"><span class="token class-name">String</span><span class="token punctuation">.</span><span class="token function">valueOf</span><span class="token punctuation">(</span><span class="token number">10</span><span class="token punctuation">)</span><span class="token punctuation">;</span>       <span class="token comment">// "10"</span>
@@ -316,7 +316,7 @@
 </span><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">int</span> a<span class="token operator">:</span> arr<span class="token punctuation">)</span> <span class="token punctuation">{</span>
 </span><span class="code-line">    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span>a <span class="token operator">+</span> <span class="token string">" "</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
 </span><span class="code-line"><span class="token punctuation">}</span>
-</span><span class="code-line"><span class="token comment">// 输出: a b c </span>
+</span><span class="code-line"><span class="token comment">// 输出: a b c</span>
 </span></code></pre>
 </div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="二维数组-multidimensional-arrays"><a aria-hidden="true" tabindex="-1" href="#二维数组-multidimensional-arrays"><span class="icon icon-link"></span></a>二维数组 Multidimensional Arrays</h3><div class="wrap-body">
 <pre class="language-java"><code class="language-java code-highlight"><span class="code-line"><span class="token keyword">int</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">[</span><span class="token punctuation">]</span> matrix <span class="token operator">=</span> <span class="token punctuation">{</span> <span class="token punctuation">{</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token number">4</span><span class="token punctuation">,</span> <span class="token number">5</span><span class="token punctuation">}</span> <span class="token punctuation">}</span><span class="token punctuation">;</span>
@@ -328,7 +328,7 @@
 </span><span class="code-line">    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>a<span class="token punctuation">[</span>i<span class="token punctuation">]</span><span class="token punctuation">[</span>j<span class="token punctuation">]</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
 </span><span class="code-line">  <span class="token punctuation">}</span>
 </span><span class="code-line"><span class="token punctuation">}</span>
-</span><span class="code-line"><span class="token comment">// 输出: 1 2 3 4 5 6 7 </span>
+</span><span class="code-line"><span class="token comment">// 输出: 1 2 3 4 5 6 7</span>
 </span></code></pre>
 </div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="排序-sort"><a aria-hidden="true" tabindex="-1" href="#排序-sort"><span class="icon icon-link"></span></a>排序 Sort</h3><div class="wrap-body">
 <pre class="language-java"><code class="language-java code-highlight"><span class="code-line"><span class="token keyword">char</span><span class="token punctuation">[</span><span class="token punctuation">]</span> chars <span class="token operator">=</span> <span class="token punctuation">{</span><span class="token char">'b'</span><span class="token punctuation">,</span> <span class="token char">'a'</span><span class="token punctuation">,</span> <span class="token char">'c'</span><span class="token punctuation">}</span><span class="token punctuation">;</span>
@@ -1174,6 +1174,37 @@
 </span><span class="code-line"><span class="token comment">// 2: 3</span>
 </span><span class="code-line"><span class="token comment">// 3: 1</span>
 </span></code></pre>
+<p><code>Stream</code>是<code>JAVA 8</code>添加的新特性，类似于一种管道。</p>
+<pre class="language-java"><code class="language-java code-highlight"><span class="code-line"><span class="token comment">// Create the stream</span>
+</span><span class="code-line"><span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&#x3C;</span><span class="token class-name">String</span><span class="token punctuation">></span></span> test <span class="token operator">=</span> <span class="token class-name">Arrays</span><span class="token punctuation">.</span><span class="token function">asList</span><span class="token punctuation">(</span><span class="token string">"123"</span><span class="token punctuation">,</span> <span class="token string">"456"</span><span class="token punctuation">,</span> <span class="token string">"789"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token class-name">Stream</span><span class="token generics"><span class="token punctuation">&#x3C;</span><span class="token class-name">String</span><span class="token punctuation">></span></span> stram <span class="token operator">=</span> test<span class="token punctuation">.</span><span class="token function">stream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token comment">// some intermediate operations</span>
+</span><span class="code-line">
+</span><span class="code-line"><span class="token comment">// fillter</span>
+</span><span class="code-line"><span class="token comment">// The original operation</span>
+</span><span class="code-line"><span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&#x3C;</span><span class="token class-name">TestDO</span><span class="token punctuation">></span></span> resultList <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ArrayList</span><span class="token generics"><span class="token punctuation">&#x3C;</span><span class="token punctuation">></span></span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token keyword">for</span><span class="token punctuation">(</span><span class="token class-name">TestDO</span> test<span class="token operator">:</span> testList<span class="token punctuation">)</span><span class="token punctuation">{</span>
+</span><span class="code-line">  <span class="token keyword">if</span><span class="token punctuation">(</span>test<span class="token punctuation">.</span><span class="token function">getTest</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span><span class="token class-name">Boolean</span><span class="token punctuation">.</span><span class="token constant">TRUE</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
+</span><span class="code-line">    resultList<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span>test<span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line">  <span class="token punctuation">}</span>
+</span><span class="code-line"><span class="token punctuation">}</span>
+</span><span class="code-line"><span class="token comment">// The stream operation</span>
+</span><span class="code-line"><span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&#x3C;</span><span class="token class-name">TestDO</span><span class="token punctuation">></span></span> resultList <span class="token operator">=</span> testList<span class="token punctuation">.</span><span class="token function">stream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">fillter</span><span class="token punctuation">(</span>test <span class="token operator">-></span> test<span class="token punctuation">.</span><span class="token function">getTest</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span><span class="token class-name">Boolean</span><span class="token punctuation">.</span><span class="token constant">TRUE</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">collect</span><span class="token punctuation">(</span><span class="token class-name">Collectors</span><span class="token punctuation">.</span><span class="token function">toList</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line">
+</span><span class="code-line"><span class="token comment">//distinct</span>
+</span><span class="code-line"><span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&#x3C;</span><span class="token class-name">String</span><span class="token punctuation">></span></span> test <span class="token operator">=</span> <span class="token class-name">Arrays</span><span class="token punctuation">.</span><span class="token function">asList</span><span class="token punctuation">(</span><span class="token string">"123"</span><span class="token punctuation">,</span> <span class="token string">"456"</span><span class="token punctuation">,</span> <span class="token string">"789"</span><span class="token punctuation">,</span> <span class="token string">"123"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line">test<span class="token punctuation">.</span><span class="token function">stream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">distinct</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">forEach</span><span class="token punctuation">(</span><span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token operator">::</span><span class="token function">println</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line">
+</span><span class="code-line"><span class="token comment">//map</span>
+</span><span class="code-line"><span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&#x3C;</span><span class="token class-name">String</span><span class="token punctuation">></span></span> test <span class="token operator">=</span> <span class="token class-name">Arrays</span><span class="token punctuation">.</span><span class="token function">asList</span><span class="token punctuation">(</span><span class="token string">"123"</span><span class="token punctuation">,</span> <span class="token string">"456"</span><span class="token punctuation">,</span> <span class="token string">"789"</span><span class="token punctuation">,</span> <span class="token string">"123"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line">test<span class="token punctuation">.</span><span class="token function">stream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">map</span><span class="token punctuation">(</span>i <span class="token operator">-></span> i <span class="token operator">+</span> <span class="token string">"hh"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">forEach</span><span class="token punctuation">(</span><span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token operator">::</span><span class="token function">println</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line">
+</span><span class="code-line"><span class="token comment">// sorted</span>
+</span><span class="code-line"><span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&#x3C;</span><span class="token class-name">Integer</span><span class="token punctuation">></span></span> numbers <span class="token operator">=</span> <span class="token class-name">Arrays</span><span class="token punctuation">.</span><span class="token function">asList</span><span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line">numbers<span class="token punctuation">.</span><span class="token function">stream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">sorted</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">forEach</span><span class="token punctuation">(</span><span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token operator">::</span><span class="token function">println</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
+</span><span class="code-line">
+</span><span class="code-line">
+</span></code></pre>
 </div></div></div></div></div><div class="wrap h2body-not-exist"><div class="wrap-header h2wrap"><h2 id="另见"><a aria-hidden="true" tabindex="-1" href="#另见"><span class="icon icon-link"></span></a>另见</h2><div class="wrap-body">
 <ul>
 <li><a href="https://www.oracle.com/cn/java/">Java 官网</a> <em>(oracle.com/cn/java)</em></li>

index.html

@@ -1334,7 +1334,7 @@
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 <p>如果你有资源，可以很方便<a href="https://github.com/jaywcjlove/reference/issues/102#issue-1451649637">部署 web 版</a>，这非常简单，只需要克隆 <a href="https://github.com/jaywcjlove/reference/tree/gh-pages">gh-pages</a> 分支代码到你的静态服务就可以了，还可以使用 <a href="https://hub.docker.com/r/wcjiang/reference">docker</a> 快捷部署 web 版。</p>
 
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