title: Preview features enabled at an invalid source release level 13, preview can be enabled only at source level 14Java(2098258)
body: <p>VS Code is showing anomalous behaviour from into my pc from the last couple of days.
  I am not able to run a simple java code. 
  At the beginning it's it's giving an error:</p>
  
  <p><strong>> Preview features enabled at an invalid source release level 13, preview can be enabled only at source level 14Java(2098258)</strong></p>
  
  <p>The compilation result ends with: `</p>
  
  <blockquote>
    <p><strong>Error: Could not find or load main class Lol
    Caused by: java.lang.ClassNotFoundException: Lol</strong></p>
  </blockquote>
  
  <p>Lol is the class name in which I have defined  the main method.</p>
  
  <pre><code>class Lol
  {
    public static void main(String args[])
    {
      System.out.println("write the String");
    }
  }
  </code></pre>
  
  <p>Every time I am stating a new project it's showing me the exact same result and end up giving this error for all the current and previously build java codes.</p>
  
  <p>I have installed jdk14 into my pc and added the path properly to after reading some solution on stackoverflow. But this does not help at all.</p>
  
  <p>Can Anybody tell me where the problem is exactly ???</p>