title: Main class is not being found when I run my project on eclipse neon
body: <p>I am trying to run my project, but the main class isn't being found. Whats wrong? Here's my code.</p>
  
  <pre><code>public class ArrayPrinter {
      public static void printArray(int[] arr) {
      int size = arr.length;
  System.out.print("[");
      for(int i=0;i&lt; size; i++){
          System.out.print(arr[i]);
             if(i&lt;size-1){
           System.out.print(",");
          }
      }
      System.out.println("]");
  }
  
  }
  </code></pre>