title: Check if an ArrayList contains every element from another ArrayList (or Collection)
body: <p>There is probably a simple one-liner that I am just not finding here, but this is my question:</p>
  
  <p>How do I check if an ArrayList contains all of the objects in another ArrayList?  I am looking (if it exists) for something along the lines of:</p>
  
  <pre><code>//INCORRECT EXAMPLE:
  if(one.contains(two))
  {
      return true;
  }
  else
  {
      return false;
  }
  </code></pre>
  
  <p>For example:</p>
  
  <pre><code>ArrayList one = {1, 2, 3, 4, 5}
  
  ArrayList two = {1, 2, 3} --&gt; True
  ArrayList two = {} --&gt; True
  ArrayList two = {1, 2, 3, 4, 5} --&gt; True
  ArrayList two = {1, 5, 2} --&gt; True
  ArrayList two = {1, 7, 4} --&gt; False
  ArrayList two = {0, 1, 3} --&gt; False
  ArrayList two = {4, 5, 6} --&gt; False
  ArrayList two = {7, 8, 9} --&gt; False
  </code></pre>