title: How do I upgrade Java Compiler?
body: <p>I'm using JCreator to work with Java. I got this exception (or maybe error?) it says the following:</p>
  
  <blockquote>
    <p>major version 51 is newer than 50, the highest major version supported by this compiler.
    It is recommended that the compiler be upgraded. </p>
  </blockquote>
  
  <p>I downloaded the last version of Java SE, but that didn't work. </p>
  
  <p>By the way, Java files compile fine and also run without any problem. But I have downloaded a file that my instructor has upload with many java classes and this message appears when I try to run the class that has the main method.</p>