title: Check in Map of list if exists value for specific key Java 8
body: <p>In Java 7 I have</p>
  
  <pre><code>Map&lt;String, List&lt;String&gt;&gt; m = new HashMap&lt;String, List&lt;String&gt;&gt;();
  boolean result = false;
  m.put("Name1", Arrays.asList("abc*1"));
  m.put("Name2", Arrays.asList("abc@*1"));
  
  
  for (Map.Entry&lt;String, List&lt;String&gt;&gt; me : m.entrySet()) {
      String key = me.getKey();
      List&lt;String&gt; valueList = me.getValue();
      if (key.equals("Name2"){
          System.out.print("Values: ");
          for (String s : valueList) {
              if(s.contains("@"){
                  result = true;
              }
          }
      }
  } 
  </code></pre>
  
  <p>How can I get în a bool result for <code>Name2</code> if it contains <code>@</code> using any match?</p>
  
  <p>I tried using The following Code but I Don t know how to use IT for specific key </p>
  
  <pre><code>result = m.values().stream().anyMatch(v -&gt; v.contains("@"))
  </code></pre>