Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Java Java Data Structures - Retired Getting There Packages

Posted by Ovadia Shalom
Ovadia Shalom
220 Points

" Now in the main method of Display.java, instantiate a new BlogPost. " Not sure what this means

Now in the main method of Display.java, instantiate a new BlogPost. Use System.out.printf to print out "This is a blog post: %s" and pass in the newly created BlogPost object to replace the string formatter.

what does this mean and what exactly is this doing?

com/example/BlogPost.java 
package com.example;

public class BlogPost {

}
Display.java 
import com.example.BlogPost;
public class Display {
  public static void main(String[] args) {
   System.out.printf("This is a blog post: %s");

  }
}

1 Answer

Chase Marchione
Chase Marchione
155,055 Points
Chase Marchione
Chase Marchione
155,055 Points

Hi Ovadia,

To instantiate means to create a new instance (a new object) of a class. In other words, you'll want to create a BlogPost object. In this task, you then need to print out its name using %s (extra fun fact: %s is an example of what is called a token.)

import com.example.BlogPost;

public class Display {
  public static void main(String[] args) {
    // Your code here...
    BlogPost sampleBlog = new BlogPost(); // using the 'new' keyword' to create an object of the BlogPost class 
    System.out.printf("This is a blog post: %s", sampleBlog);
  }
}

Hope this helps!

manish chitre
manish chitre
1,910 Points
manish chitre
manish chitre
1,910 Points

Tried this but its not working.

manish chitre
manish chitre
1,910 Points
manish chitre
manish chitre
1,910 Points

Actually the above example is correct its working..i was running Display.java that is why i was getting errors but we have to run com/example/BlogPost.java, because it contains the package! Thank you cj marchoine.