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Java

Posted by Vasile Rimis
Vasile Rimis
1,672 Points

Forum.java NullPointerEcxeption starting on line 10

public class Forum { private String mTopic;

public String getTopic() { return mTopic; }

public void addPost(ForumPost post) { System.out.printf("New post from %s %s about %s %s.\n", post.getAuthor().getFirstName(), post.getAuthor().getLastName(), post.getTitle(),post.getDescription());

} public Forum(String Topic){ mTopic = Topic; } }

1 Answer

Jeremy Hill
Jeremy Hill
29,567 Points
Jeremy Hill
Jeremy Hill
29,567 Points

I'm not sure if I fully understand what is going on in your code but if you have created a class called ForumPost then your code should look more like this:

public class Forum{
  private String mTopic;
  public Forum(String Topic){  // constructor should go here
    mTopic = Topic;
  }
  public String getTopic(){  
    return mTopic;
  }
  ForumPost post = new ForumPost();   // instantiate your class here and use its methods below.
  public void addPost(){
     System.out.printf("New post titled %s from %s and is about %s.", post.getTitle(), post.getAuthor(), post.getDescription());
  }
}

All this is assuming that class ForumPost exists along with all of the methods associated with it.

Vasile Rimis
Vasile Rimis
1,672 Points

Thank you very much :)