title: How to use lambda expression in android
body: <p>I'm having this error when trying to use lambda expressions.</p>
  
  <p>Error:</p>
  
  <blockquote>
    <p>Error:(122, 42) error: lambda expressions are not supported in -source 1.7
    (use -source 8 or higher to enable lambda expressions)</p>
  </blockquote>
  
  <p>How can I solve it notice that my android studio is 3.0</p>