title: Distinct value from ArrayList in JAVA
body: <p>I have the following ArrayLists:    1) <code>List&lt;MAP&lt;String,String&gt;&gt;</code> in 2) <code>ArrayList&lt;&gt;()</code> :</p>
  
  <pre><code>[
  [{name=a,age=33,city=NY},{name=b,age=23,city=NY},{name=d,age=83,city=CA}],
  [{name=f,age=53,city=FL}],
  [{name=d,age=11,city=TX},{name=a,age=13,city=CA}],
  ]
  </code></pre>
  
  <p>I want to get new ArrayList with distinct values of names as:</p>
  
  <pre><code>[{a},{b},{d},{f}]
  </code></pre>
  
  <p>Can you assist :)?</p>