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<h1><a href="/java-8-lambda-date-2017-12-28-9032-ch.html"> JAVA8 Lambda </a></h1>
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<h1>Runnable Lambda</h1>
<div class="highlight"><pre><span></span><span class="kn">package</span> <span class="nn">com.xxb.java.lambda</span><span class="o">;</span>
<span class="kn">import</span> <span class="nn">java.util.*</span><span class="o">;</span>
<span class="kn">import</span> <span class="nn">java.util.function.Function</span><span class="o">;</span>
<span class="kn">import</span> <span class="nn">java.util.stream.Collectors</span><span class="o">;</span>
<span class="kd">class</span> <span class="nc">Java8Lambda</span> <span class="o">{</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">main</span><span class="o">(</span><span class="n">String</span><span class="o">[]</span> <span class="n">args</span><span class="o">)</span> <span class="o">{</span>
<span class="n">runnableTest</span><span class="o">();</span>
<span class="n">comparatorTest</span><span class="o">();</span>
<span class="n">loopingTest</span><span class="o">();</span>
<span class="n">chainingAndFilter</span><span class="o">();</span>
<span class="n">mutationAndResults</span><span class="o">();</span>
<span class="n">calculatingWithMap</span><span class="o">();</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">loopingTest</span><span class="o">(){</span>
<span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="n">pl</span> <span class="o">=</span> <span class="n">Person</span><span class="o">.</span><span class="na">createShortList</span><span class="o">();</span>
<span class="n">pl</span><span class="o">.</span><span class="na">forEach</span><span class="o">(</span><span class="n">Person</span><span class="o">::</span><span class="n">printName</span><span class="o">);</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">chainingAndFilter</span><span class="o">(){</span>
<span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="n">pl</span> <span class="o">=</span> <span class="n">Person</span><span class="o">.</span><span class="na">createShortList</span><span class="o">();</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"\n=== Western Pilot Phone List ==="</span><span class="o">);</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"\n=== Eastern Draftee Phone List ==="</span><span class="o">);</span>
<span class="n">pl</span><span class="o">.</span><span class="na">stream</span><span class="o">().</span><span class="na">filter</span><span class="o">(</span><span class="n">person</span> <span class="o">-></span> <span class="n">person</span><span class="o">.</span><span class="na">getAge</span><span class="o">()</span> <span class="o">></span> <span class="mi">10</span><span class="o">).</span><span class="na">forEach</span><span class="o">(</span><span class="n">Person</span><span class="o">::</span><span class="n">print</span><span class="o">);</span>
<span class="o">}</span>
<span class="kd">private</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">mutationAndResults</span><span class="o">(){</span>
<span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="n">list</span> <span class="o">=</span> <span class="n">Person</span><span class="o">.</span><span class="na">createShortList</span><span class="o">();</span>
<span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="n">persons</span> <span class="o">=</span> <span class="n">list</span><span class="o">.</span><span class="na">stream</span><span class="o">().</span><span class="na">filter</span><span class="o">(</span><span class="n">person</span> <span class="o">-></span> <span class="n">person</span><span class="o">.</span><span class="na">getAge</span><span class="o">()</span> <span class="o">></span> <span class="mi">10</span><span class="o">).</span><span class="na">collect</span><span class="o">(</span><span class="n">Collectors</span><span class="o">.</span><span class="na">toList</span><span class="o">());</span>
<span class="n">persons</span><span class="o">.</span><span class="na">forEach</span><span class="o">(</span><span class="n">Person</span><span class="o">::</span><span class="n">print</span><span class="o">);</span>
<span class="o">}</span>
<span class="kd">private</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">calculatingWithMap</span><span class="o">(){</span>
<span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="n">personList</span> <span class="o">=</span><span class="n">Person</span><span class="o">.</span><span class="na">createShortList</span><span class="o">();</span>
<span class="c1">// Calc average age of pilots old style</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"== Calc Old Style =="</span><span class="o">);</span>
<span class="kt">int</span> <span class="n">sum</span> <span class="o">=</span> <span class="mi">0</span><span class="o">;</span>
<span class="kt">int</span> <span class="n">count</span> <span class="o">=</span> <span class="mi">0</span><span class="o">;</span>
<span class="k">for</span> <span class="o">(</span><span class="n">Person</span> <span class="n">p</span><span class="o">:</span><span class="n">personList</span><span class="o">){</span>
<span class="k">if</span> <span class="o">(</span><span class="n">p</span><span class="o">.</span><span class="na">getAge</span><span class="o">()</span> <span class="o">>=</span> <span class="mi">23</span> <span class="o">&&</span> <span class="n">p</span><span class="o">.</span><span class="na">getAge</span><span class="o">()</span> <span class="o"><=</span> <span class="mi">65</span> <span class="o">){</span>
<span class="n">sum</span> <span class="o">=</span> <span class="n">sum</span> <span class="o">+</span> <span class="n">p</span><span class="o">.</span><span class="na">getAge</span><span class="o">();</span>
<span class="n">count</span><span class="o">++;</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="kt">long</span> <span class="n">average</span> <span class="o">=</span> <span class="n">sum</span> <span class="o">/</span> <span class="n">count</span><span class="o">;</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"Total Ages: "</span> <span class="o">+</span> <span class="n">sum</span><span class="o">);</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"Average Age: "</span> <span class="o">+</span> <span class="n">average</span><span class="o">);</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"\n== Calc New Style =="</span><span class="o">);</span>
<span class="kt">long</span> <span class="n">totalAge</span> <span class="o">=</span> <span class="n">personList</span><span class="o">.</span><span class="na">stream</span><span class="o">().</span>
<span class="n">filter</span><span class="o">(</span><span class="n">person</span> <span class="o">-></span> <span class="n">person</span><span class="o">.</span><span class="na">getAge</span><span class="o">()</span> <span class="o">>=</span><span class="mi">23</span> <span class="o">&&</span> <span class="n">person</span><span class="o">.</span><span class="na">getAge</span><span class="o">()<=</span><span class="mi">65</span><span class="o">).</span><span class="na">mapToInt</span><span class="o">(</span><span class="n">Person</span><span class="o">::</span><span class="n">getAge</span><span class="o">).</span><span class="na">sum</span><span class="o">();</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="n">totalAge</span><span class="o">);</span>
<span class="n">OptionalDouble</span> <span class="n">averageAge</span> <span class="o">=</span> <span class="n">personList</span><span class="o">.</span><span class="na">parallelStream</span><span class="o">()</span>
<span class="o">.</span><span class="na">filter</span><span class="o">(</span><span class="n">person</span> <span class="o">-></span> <span class="n">person</span><span class="o">.</span><span class="na">getAge</span><span class="o">()</span> <span class="o">>=</span><span class="mi">23</span> <span class="o">&&</span> <span class="n">person</span><span class="o">.</span><span class="na">getAge</span><span class="o">()<=</span><span class="mi">65</span><span class="o">).</span><span class="na">mapToDouble</span><span class="o">(</span><span class="n">Person</span><span class="o">::</span><span class="n">getAge</span><span class="o">).</span><span class="na">average</span><span class="o">();</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="n">averageAge</span><span class="o">.</span><span class="na">isPresent</span><span class="o">()?</span> <span class="n">averageAge</span><span class="o">.</span><span class="na">getAsDouble</span><span class="o">():</span> <span class="mi">0</span><span class="o">);</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">runnableTest</span><span class="o">(){</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"=== RunnableTest ==="</span><span class="o">);</span>
<span class="n">Runnable</span> <span class="n">r1</span> <span class="o">=</span> <span class="k">new</span> <span class="n">Runnable</span><span class="o">(){</span>
<span class="nd">@Override</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">run</span><span class="o">(){</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"Hello world one!"</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">};</span>
<span class="n">r1</span><span class="o">.</span><span class="na">run</span><span class="o">();</span>
<span class="n">Runnable</span> <span class="n">r2</span> <span class="o">=</span> <span class="o">()</span> <span class="o">-></span> <span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"Hello world two!"</span><span class="o">);</span>
<span class="n">r2</span><span class="o">.</span><span class="na">run</span><span class="o">();</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">comparatorTest</span><span class="o">(){</span>
<span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="n">personList</span> <span class="o">=</span> <span class="n">Person</span><span class="o">.</span><span class="na">createShortList</span><span class="o">();</span>
<span class="n">Collections</span><span class="o">.</span><span class="na">sort</span><span class="o">(</span><span class="n">personList</span><span class="o">,</span> <span class="k">new</span> <span class="n">Comparator</span><span class="o"><</span><span class="n">Person</span><span class="o">>(){</span>
<span class="kd">public</span> <span class="kt">int</span> <span class="nf">compare</span><span class="o">(</span><span class="n">Person</span> <span class="n">p1</span><span class="o">,</span> <span class="n">Person</span> <span class="n">p2</span><span class="o">){</span>
<span class="k">return</span> <span class="n">p1</span><span class="o">.</span><span class="na">getSurName</span><span class="o">().</span><span class="na">compareTo</span><span class="o">(</span><span class="n">p2</span><span class="o">.</span><span class="na">getSurName</span><span class="o">());</span>
<span class="o">}</span>
<span class="o">});</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"=== sorted asc surName"</span><span class="o">);</span>
<span class="k">for</span> <span class="o">(</span><span class="n">Person</span> <span class="n">p</span> <span class="o">:</span> <span class="n">personList</span><span class="o">)</span> <span class="o">{</span>
<span class="n">p</span><span class="o">.</span><span class="na">printName</span><span class="o">();</span>
<span class="o">}</span>
<span class="c1">//use lambda </span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"=== sorted asc surName"</span><span class="o">);</span>
<span class="n">Collections</span><span class="o">.</span><span class="na">sort</span><span class="o">(</span><span class="n">personList</span><span class="o">,</span> <span class="o">(</span><span class="n">Person</span> <span class="n">p1</span><span class="o">,</span> <span class="n">Person</span> <span class="n">p2</span><span class="o">)</span> <span class="o">-></span> <span class="n">p1</span><span class="o">.</span><span class="na">getSurName</span><span class="o">().</span><span class="na">compareTo</span><span class="o">(</span><span class="n">p2</span><span class="o">.</span><span class="na">getSurName</span><span class="o">()));</span>
<span class="k">for</span> <span class="o">(</span><span class="n">Person</span> <span class="n">p</span> <span class="o">:</span><span class="n">personList</span><span class="o">)</span> <span class="o">{</span>
<span class="n">p</span><span class="o">.</span><span class="na">printName</span><span class="o">();</span>
<span class="o">}</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"=== sorted desc surName"</span><span class="o">);</span>
<span class="n">Collections</span><span class="o">.</span><span class="na">sort</span><span class="o">(</span><span class="n">personList</span><span class="o">,</span> <span class="o">(</span><span class="n">p1</span><span class="o">,</span> <span class="n">p2</span><span class="o">)</span> <span class="o">-></span> <span class="n">p2</span><span class="o">.</span><span class="na">getSurName</span><span class="o">().</span><span class="na">compareTo</span><span class="o">(</span><span class="n">p1</span><span class="o">.</span><span class="na">getSurName</span><span class="o">()));</span>
<span class="k">for</span> <span class="o">(</span><span class="n">Person</span> <span class="n">p</span> <span class="o">:</span><span class="n">personList</span><span class="o">)</span> <span class="o">{</span>
<span class="n">p</span><span class="o">.</span><span class="na">printName</span><span class="o">();</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">functionTest</span><span class="o">(){</span>
<span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="n">personlists</span> <span class="o">=</span> <span class="n">Person</span><span class="o">.</span><span class="na">createShortList</span><span class="o">();</span>
<span class="n">Function</span><span class="o"><</span><span class="n">Person</span><span class="o">,</span><span class="n">String</span><span class="o">></span> <span class="n">westernStyle</span> <span class="o">=</span> <span class="n">p</span> <span class="o">-></span> <span class="o">{</span>
<span class="k">return</span> <span class="s">"\nName: "</span> <span class="o">+</span> <span class="n">p</span><span class="o">.</span><span class="na">getGivenName</span><span class="o">()</span> <span class="o">+</span> <span class="s">" "</span> <span class="o">+</span> <span class="n">p</span><span class="o">.</span><span class="na">getSurName</span><span class="o">()</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"Age: "</span> <span class="o">+</span> <span class="n">p</span><span class="o">.</span><span class="na">getAge</span><span class="o">()</span> <span class="o">+</span> <span class="s">" "</span> <span class="o">+</span> <span class="s">"Gender: "</span> <span class="o">+</span> <span class="n">p</span><span class="o">.</span><span class="na">getGender</span><span class="o">()</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"EMail: "</span> <span class="o">+</span> <span class="n">p</span><span class="o">.</span><span class="na">geteMail</span><span class="o">()</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"Phone: "</span> <span class="o">+</span> <span class="n">p</span><span class="o">.</span><span class="na">getPhone</span><span class="o">()</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"Address: "</span> <span class="o">+</span> <span class="n">p</span><span class="o">.</span><span class="na">getAddress</span><span class="o">();</span>
<span class="o">};</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span><span class="s">"\n ===westernStyle=== "</span><span class="o">);</span>
<span class="k">for</span> <span class="o">(</span><span class="n">Person</span> <span class="n">p</span> <span class="o">:</span><span class="n">personlists</span><span class="o">)</span> <span class="o">{</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span>
<span class="n">p</span><span class="o">.</span><span class="na">printCustom</span><span class="o">(</span><span class="n">westernStyle</span><span class="o">)</span>
<span class="o">);</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="kd">class</span> <span class="nc">Person</span> <span class="o">{</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">givenName</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">surName</span><span class="o">;</span>
<span class="kd">private</span> <span class="kt">int</span> <span class="n">age</span><span class="o">;</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">setGivenName</span><span class="o">(</span><span class="n">String</span> <span class="n">givenName</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="na">givenName</span> <span class="o">=</span> <span class="n">givenName</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">setSurName</span><span class="o">(</span><span class="n">String</span> <span class="n">surName</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="na">surName</span> <span class="o">=</span> <span class="n">surName</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">setAge</span><span class="o">(</span><span class="kt">int</span> <span class="n">age</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="na">age</span> <span class="o">=</span> <span class="n">age</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">Gender</span> <span class="nf">getGender</span><span class="o">()</span> <span class="o">{</span>
<span class="k">return</span> <span class="n">gender</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">setGender</span><span class="o">(</span><span class="n">Gender</span> <span class="n">gender</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="na">gender</span> <span class="o">=</span> <span class="n">gender</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">String</span> <span class="nf">geteMail</span><span class="o">()</span> <span class="o">{</span>
<span class="k">return</span> <span class="n">eMail</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">seteMail</span><span class="o">(</span><span class="n">String</span> <span class="n">eMail</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="na">eMail</span> <span class="o">=</span> <span class="n">eMail</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">String</span> <span class="nf">getPhone</span><span class="o">()</span> <span class="o">{</span>
<span class="k">return</span> <span class="n">phone</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">setPhone</span><span class="o">(</span><span class="n">String</span> <span class="n">phone</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="na">phone</span> <span class="o">=</span> <span class="n">phone</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">String</span> <span class="nf">getAddress</span><span class="o">()</span> <span class="o">{</span>
<span class="k">return</span> <span class="n">address</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">setAddress</span><span class="o">(</span><span class="n">String</span> <span class="n">address</span><span class="o">)</span> <span class="o">{</span>
<span class="k">this</span><span class="o">.</span><span class="na">address</span> <span class="o">=</span> <span class="n">address</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">private</span> <span class="n">Gender</span> <span class="n">gender</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">eMail</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">phone</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">address</span><span class="o">;</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="kd">class</span> <span class="nc">Builder</span><span class="o">{</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">givenName</span><span class="o">=</span><span class="s">""</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">surName</span><span class="o">=</span><span class="s">""</span><span class="o">;</span>
<span class="kd">private</span> <span class="kt">int</span> <span class="n">age</span> <span class="o">=</span> <span class="mi">0</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">Gender</span> <span class="n">gender</span> <span class="o">=</span> <span class="n">Gender</span><span class="o">.</span><span class="na">FEMALE</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">eMail</span> <span class="o">=</span> <span class="s">""</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">phone</span> <span class="o">=</span> <span class="s">""</span><span class="o">;</span>
<span class="kd">private</span> <span class="n">String</span> <span class="n">address</span> <span class="o">=</span> <span class="s">""</span><span class="o">;</span>
<span class="kd">public</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span> <span class="nf">givenName</span><span class="o">(</span><span class="n">String</span> <span class="n">givenName</span><span class="o">){</span>
<span class="k">this</span><span class="o">.</span><span class="na">givenName</span> <span class="o">=</span> <span class="n">givenName</span><span class="o">;</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span> <span class="nf">surName</span><span class="o">(</span><span class="n">String</span> <span class="n">surName</span><span class="o">){</span>
<span class="k">this</span><span class="o">.</span><span class="na">surName</span> <span class="o">=</span> <span class="n">surName</span><span class="o">;</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span> <span class="nf">age</span> <span class="o">(</span><span class="kt">int</span> <span class="n">val</span><span class="o">){</span>
<span class="n">age</span> <span class="o">=</span> <span class="n">val</span><span class="o">;</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span> <span class="nf">gender</span><span class="o">(</span><span class="n">Gender</span> <span class="n">val</span><span class="o">){</span>
<span class="n">gender</span> <span class="o">=</span> <span class="n">val</span><span class="o">;</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span> <span class="nf">email</span><span class="o">(</span><span class="n">String</span> <span class="n">val</span><span class="o">){</span>
<span class="n">eMail</span> <span class="o">=</span> <span class="n">val</span><span class="o">;</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span> <span class="nf">phoneNumber</span><span class="o">(</span><span class="n">String</span> <span class="n">val</span><span class="o">){</span>
<span class="n">phone</span> <span class="o">=</span> <span class="n">val</span><span class="o">;</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span> <span class="nf">address</span><span class="o">(</span><span class="n">String</span> <span class="n">val</span><span class="o">){</span>
<span class="n">address</span> <span class="o">=</span> <span class="n">val</span><span class="o">;</span>
<span class="k">return</span> <span class="k">this</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">Person</span> <span class="nf">build</span><span class="o">(){</span>
<span class="k">return</span> <span class="k">new</span> <span class="n">Person</span><span class="o">(</span><span class="k">this</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="kd">private</span> <span class="nf">Person</span><span class="o">(){</span>
<span class="kd">super</span><span class="o">();</span>
<span class="o">}</span>
<span class="kd">private</span> <span class="nf">Person</span><span class="o">(</span><span class="n">Person</span><span class="o">.</span><span class="na">Builder</span> <span class="n">builder</span><span class="o">){</span>
<span class="n">givenName</span> <span class="o">=</span> <span class="n">builder</span><span class="o">.</span><span class="na">givenName</span><span class="o">;</span>
<span class="n">surName</span> <span class="o">=</span> <span class="n">builder</span><span class="o">.</span><span class="na">surName</span><span class="o">;</span>
<span class="n">age</span> <span class="o">=</span> <span class="n">builder</span><span class="o">.</span><span class="na">age</span><span class="o">;</span>
<span class="n">gender</span> <span class="o">=</span> <span class="n">builder</span><span class="o">.</span><span class="na">gender</span><span class="o">;</span>
<span class="n">eMail</span> <span class="o">=</span> <span class="n">builder</span><span class="o">.</span><span class="na">eMail</span><span class="o">;</span>
<span class="n">phone</span> <span class="o">=</span> <span class="n">builder</span><span class="o">.</span><span class="na">phone</span><span class="o">;</span>
<span class="n">address</span> <span class="o">=</span> <span class="n">builder</span><span class="o">.</span><span class="na">address</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">String</span> <span class="nf">getGivenName</span><span class="o">(){</span>
<span class="k">return</span> <span class="n">givenName</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">String</span> <span class="nf">getSurName</span><span class="o">(){</span>
<span class="k">return</span> <span class="n">surName</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">int</span> <span class="nf">getAge</span><span class="o">(){</span>
<span class="k">return</span> <span class="n">age</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">print</span><span class="o">(){</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span>
<span class="s">"\nName: "</span> <span class="o">+</span> <span class="n">givenName</span> <span class="o">+</span> <span class="s">" "</span> <span class="o">+</span> <span class="n">surName</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"Age: "</span> <span class="o">+</span> <span class="n">age</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"Gender: "</span> <span class="o">+</span> <span class="n">gender</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"eMail: "</span> <span class="o">+</span> <span class="n">eMail</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"Phone: "</span> <span class="o">+</span> <span class="n">phone</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span>
<span class="s">"Address: "</span> <span class="o">+</span> <span class="n">address</span> <span class="o">+</span> <span class="s">"\n"</span>
<span class="o">);</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kt">void</span> <span class="nf">printName</span><span class="o">(){</span>
<span class="n">System</span><span class="o">.</span><span class="na">out</span><span class="o">.</span><span class="na">println</span><span class="o">(</span>
<span class="s">"Name: "</span> <span class="o">+</span> <span class="n">givenName</span> <span class="o">+</span> <span class="s">" "</span> <span class="o">+</span> <span class="n">surName</span><span class="o">);</span>
<span class="o">}</span>
<span class="nd">@Override</span>
<span class="kd">public</span> <span class="n">String</span> <span class="nf">toString</span><span class="o">(){</span>
<span class="k">return</span> <span class="s">"Name: "</span> <span class="o">+</span> <span class="n">givenName</span> <span class="o">+</span> <span class="s">" "</span> <span class="o">+</span> <span class="n">surName</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span> <span class="s">"Age: "</span> <span class="o">+</span> <span class="n">age</span> <span class="o">+</span> <span class="s">" Gender: "</span> <span class="o">+</span> <span class="n">gender</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span> <span class="s">"eMail: "</span> <span class="o">+</span> <span class="n">eMail</span> <span class="o">+</span> <span class="s">"\n"</span> <span class="o">+</span> <span class="s">"Address: "</span> <span class="o">+</span> <span class="n">address</span> <span class="o">+</span> <span class="s">"\n"</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="nf">createShortList</span><span class="o">(){</span>
<span class="n">List</span><span class="o"><</span><span class="n">Person</span><span class="o">></span> <span class="n">people</span> <span class="o">=</span> <span class="k">new</span> <span class="n">ArrayList</span><span class="o"><>();</span>
<span class="n">people</span><span class="o">.</span><span class="na">add</span><span class="o">(</span>
<span class="k">new</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span><span class="o">()</span>
<span class="o">.</span><span class="na">givenName</span><span class="o">(</span><span class="s">"Bob"</span><span class="o">)</span>
<span class="o">.</span><span class="na">surName</span><span class="o">(</span><span class="s">"Baker"</span><span class="o">)</span>
<span class="o">.</span><span class="na">age</span><span class="o">(</span><span class="mi">21</span><span class="o">)</span>
<span class="o">.</span><span class="na">gender</span><span class="o">(</span><span class="n">Gender</span><span class="o">.</span><span class="na">MALE</span><span class="o">)</span>
<span class="o">.</span><span class="na">email</span><span class="o">(</span><span class="s">"bob.baker@example.com"</span><span class="o">)</span>
<span class="o">.</span><span class="na">phoneNumber</span><span class="o">(</span><span class="s">"201-121-4678"</span><span class="o">)</span>
<span class="o">.</span><span class="na">address</span><span class="o">(</span><span class="s">"44 4th St, Smallville, KS 12333"</span><span class="o">)</span>
<span class="o">.</span><span class="na">build</span><span class="o">()</span>
<span class="o">);</span>
<span class="n">people</span><span class="o">.</span><span class="na">add</span><span class="o">(</span>
<span class="k">new</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span><span class="o">()</span>
<span class="o">.</span><span class="na">givenName</span><span class="o">(</span><span class="s">"Jane"</span><span class="o">)</span>
<span class="o">.</span><span class="na">surName</span><span class="o">(</span><span class="s">"Doe"</span><span class="o">)</span>
<span class="o">.</span><span class="na">age</span><span class="o">(</span><span class="mi">25</span><span class="o">)</span>
<span class="o">.</span><span class="na">gender</span><span class="o">(</span><span class="n">Gender</span><span class="o">.</span><span class="na">FEMALE</span><span class="o">)</span>
<span class="o">.</span><span class="na">email</span><span class="o">(</span><span class="s">"jane.doe@example.com"</span><span class="o">)</span>
<span class="o">.</span><span class="na">phoneNumber</span><span class="o">(</span><span class="s">"202-123-4678"</span><span class="o">)</span>
<span class="o">.</span><span class="na">address</span><span class="o">(</span><span class="s">"33 3rd St, Smallville, KS 12333"</span><span class="o">)</span>
<span class="o">.</span><span class="na">build</span><span class="o">()</span>
<span class="o">);</span>
<span class="n">people</span><span class="o">.</span><span class="na">add</span><span class="o">(</span>
<span class="k">new</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span><span class="o">()</span>
<span class="o">.</span><span class="na">givenName</span><span class="o">(</span><span class="s">"John"</span><span class="o">)</span>
<span class="o">.</span><span class="na">surName</span><span class="o">(</span><span class="s">"Doe"</span><span class="o">)</span>
<span class="o">.</span><span class="na">age</span><span class="o">(</span><span class="mi">25</span><span class="o">)</span>
<span class="o">.</span><span class="na">gender</span><span class="o">(</span><span class="n">Gender</span><span class="o">.</span><span class="na">MALE</span><span class="o">)</span>
<span class="o">.</span><span class="na">email</span><span class="o">(</span><span class="s">"john.doe@example.com"</span><span class="o">)</span>
<span class="o">.</span><span class="na">phoneNumber</span><span class="o">(</span><span class="s">"202-123-4678"</span><span class="o">)</span>
<span class="o">.</span><span class="na">address</span><span class="o">(</span><span class="s">"33 3rd St, Smallville, KS 12333"</span><span class="o">)</span>
<span class="o">.</span><span class="na">build</span><span class="o">()</span>
<span class="o">);</span>
<span class="n">people</span><span class="o">.</span><span class="na">add</span><span class="o">(</span>
<span class="k">new</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span><span class="o">()</span>
<span class="o">.</span><span class="na">givenName</span><span class="o">(</span><span class="s">"James"</span><span class="o">)</span>
<span class="o">.</span><span class="na">surName</span><span class="o">(</span><span class="s">"Johnson"</span><span class="o">)</span>
<span class="o">.</span><span class="na">age</span><span class="o">(</span><span class="mi">45</span><span class="o">)</span>
<span class="o">.</span><span class="na">gender</span><span class="o">(</span><span class="n">Gender</span><span class="o">.</span><span class="na">MALE</span><span class="o">)</span>
<span class="o">.</span><span class="na">email</span><span class="o">(</span><span class="s">"james.johnson@example.com"</span><span class="o">)</span>
<span class="o">.</span><span class="na">phoneNumber</span><span class="o">(</span><span class="s">"333-456-1233"</span><span class="o">)</span>
<span class="o">.</span><span class="na">address</span><span class="o">(</span><span class="s">"201 2nd St, New York, NY 12111"</span><span class="o">)</span>
<span class="o">.</span><span class="na">build</span><span class="o">()</span>
<span class="o">);</span>
<span class="n">people</span><span class="o">.</span><span class="na">add</span><span class="o">(</span>
<span class="k">new</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span><span class="o">()</span>
<span class="o">.</span><span class="na">givenName</span><span class="o">(</span><span class="s">"Joe"</span><span class="o">)</span>
<span class="o">.</span><span class="na">surName</span><span class="o">(</span><span class="s">"Bailey"</span><span class="o">)</span>
<span class="o">.</span><span class="na">age</span><span class="o">(</span><span class="mi">67</span><span class="o">)</span>
<span class="o">.</span><span class="na">gender</span><span class="o">(</span><span class="n">Gender</span><span class="o">.</span><span class="na">MALE</span><span class="o">)</span>
<span class="o">.</span><span class="na">email</span><span class="o">(</span><span class="s">"joebob.bailey@example.com"</span><span class="o">)</span>
<span class="o">.</span><span class="na">phoneNumber</span><span class="o">(</span><span class="s">"112-111-1111"</span><span class="o">)</span>
<span class="o">.</span><span class="na">address</span><span class="o">(</span><span class="s">"111 1st St, Town, CA 11111"</span><span class="o">)</span>
<span class="o">.</span><span class="na">build</span><span class="o">()</span>
<span class="o">);</span>
<span class="n">people</span><span class="o">.</span><span class="na">add</span><span class="o">(</span>
<span class="k">new</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span><span class="o">()</span>
<span class="o">.</span><span class="na">givenName</span><span class="o">(</span><span class="s">"Phil"</span><span class="o">)</span>
<span class="o">.</span><span class="na">surName</span><span class="o">(</span><span class="s">"Smith"</span><span class="o">)</span>
<span class="o">.</span><span class="na">age</span><span class="o">(</span><span class="mi">55</span><span class="o">)</span>
<span class="o">.</span><span class="na">gender</span><span class="o">(</span><span class="n">Gender</span><span class="o">.</span><span class="na">MALE</span><span class="o">)</span>
<span class="o">.</span><span class="na">email</span><span class="o">(</span><span class="s">"phil.smith@examp;e.com"</span><span class="o">)</span>
<span class="o">.</span><span class="na">phoneNumber</span><span class="o">(</span><span class="s">"222-33-1234"</span><span class="o">)</span>
<span class="o">.</span><span class="na">address</span><span class="o">(</span><span class="s">"22 2nd St, New Park, CO 222333"</span><span class="o">)</span>
<span class="o">.</span><span class="na">build</span><span class="o">()</span>
<span class="o">);</span>
<span class="n">people</span><span class="o">.</span><span class="na">add</span><span class="o">(</span>
<span class="k">new</span> <span class="n">Person</span><span class="o">.</span><span class="na">Builder</span><span class="o">()</span>
<span class="o">.</span><span class="na">givenName</span><span class="o">(</span><span class="s">"Betty"</span><span class="o">)</span>
<span class="o">.</span><span class="na">surName</span><span class="o">(</span><span class="s">"Jones"</span><span class="o">)</span>
<span class="o">.</span><span class="na">age</span><span class="o">(</span><span class="mi">85</span><span class="o">)</span>
<span class="o">.</span><span class="na">gender</span><span class="o">(</span><span class="n">Gender</span><span class="o">.</span><span class="na">FEMALE</span><span class="o">)</span>
<span class="o">.</span><span class="na">email</span><span class="o">(</span><span class="s">"betty.jones@example.com"</span><span class="o">)</span>
<span class="o">.</span><span class="na">phoneNumber</span><span class="o">(</span><span class="s">"211-33-1234"</span><span class="o">)</span>
<span class="o">.</span><span class="na">address</span><span class="o">(</span><span class="s">"22 4th St, New Park, CO 222333"</span><span class="o">)</span>
<span class="o">.</span><span class="na">build</span><span class="o">()</span>
<span class="o">);</span>
<span class="k">return</span> <span class="n">people</span><span class="o">;</span>
<span class="o">}</span>
<span class="kd">public</span> <span class="n">String</span> <span class="nf">printCustom</span><span class="o">(</span><span class="n">Function</span> <span class="o"><</span><span class="n">Person</span><span class="o">,</span> <span class="n">String</span><span class="o">></span> <span class="n">f</span><span class="o">){</span>
<span class="k">return</span> <span class="n">f</span><span class="o">.</span><span class="na">apply</span><span class="o">(</span><span class="k">this</span><span class="o">);</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="kd">enum</span> <span class="n">Gender</span> <span class="o">{</span> <span class="n">MALE</span><span class="o">,</span> <span class="n">FEMALE</span> <span class="o">}</span>
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<h4>Published</h4>
<time pubdate="pubdate" datetime="2017-12-28T09:32:53+08:00">12 28, 2017</time>
<h4>Last Updated</h4>
<div class="last_updated">2017-12-28 09:32:53+08:00</div>
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