title: Error:Gradle: Execution failed for task ':core:compileJava'. > Compilation failed
body: <p>I was about to make a simple game just for educational purposes but I got a weird Gradle error when I'm trying to launch the game.</p>
  
  <p>My source code:</p>
  
  <p><a href="https://i.stack.imgur.com/We8QF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/We8QF.png" alt="source code"></a></p>
  
  <p><a href="https://i.stack.imgur.com/dpmDP.png" rel="nofollow noreferrer">Build errors</a></p>
  
  <p>I of course Googled the error but because my lack of experience I didn't found anything that solved my problem. Thanks in Advance</p>
  
  <p>Naomi,</p>