title: Android Studio Error: Could not initialize class com.intellij.psi.jsp.JspElementType
body: <p>I am using Android Studio 3. I have worked with it smoothly a short time. But today, I can not create java class in my project. It allows me to enter java class name but I can not press OK button to complete. I have tried cleaning project, restart android studio but it still failed. I get two error messages from android studio as follows:</p>
  <blockquote>
  <p>Could not initialize class com.intellij.psi.jsp.JspElementType</p>
  <p>Could not initialize class com.intellij.psi.impl.source.tree.StdTokenSets</p>
  </blockquote>
  <p>Does anyone have errors like me, can you help me in this case? Thanks all and sorry for my bad English grammar.</p>