Can't find error...

The code you added for the last task (creating and printing a BlogPost) is fine, but the code you wrote to create the BlogPost class and to import it have faults, your code should not actually have gotten all the way to task 4, but the challenge checker is sometimes a bit faulty in it's error checking.

The problem is that firstly, when creating a class you shouldn't include parentheses after the name, that is only done for methods and the like. Secondly in Java import statements have to be at the top of the file (directly below the package statement if there is one) placing them within a method is not allowed.

So the solution looks like this:

BlogPost.java:

package com.example;
public class BlogPost {
}

Display.java:

import com.example.BlogPost;

public class Display {
  public static void main(String[] args) {
    BlogPost bp = new BlogPost();
    System.out.printf("This is a blog post: %s", bp);

  }
}