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Java Java Data Structures - Retired Getting There Type Casting

Why am I getting following error? Oops! It looks like Task 1 is no longer passing. I completed task 1 and trying task2

I already completed task 1 and now trying task2.

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

import java.util.Date;

public class BlogPost {
    private String mAuthor;
    private String mTitle;
    private String mBody;
    private String mCategory;
    private Date mCreationDate;

    public BlogPost(String author, String title, String body, String category, Date creationDate) {
      mAuthor = author;
      mTitle = title;
      mBody = body;
      mCategory = category;
      mCreationDate = creationDate;
    }

    public String getAuthor() {
      return mAuthor;
    }

    public String getTitle() {
      return mTitle;
    }

    public String getBody() {
      return mBody;
    }

    public String getCategory() {
      return mCategory;
    }

    public Date getCreationDate() {
      return mCreationDate;
    }


}
TypeCastChecker.java
import com.example.BlogPost;

public class TypeCastChecker {
  /***************
  I have provided 2 hints for this challenge.
  Change `false` to `true` in one line below, then click the "Check work" button to see the hint.
  NOTE: You must set all the hints to false to complete the exercise.
  ****************/
  public static boolean HINT_1_ENABLED = false;
  public static boolean HINT_2_ENABLED = false;

  public static String getTitleFromObject(Object obj) {
    // Fix this result variable to be the correct string.
    String result = "";
    BlogPost ob = null;
    if(obj instanceof BlogPost){
      ob = (BlogPost)obj;
      result = ob.getTitle();
    }
    return result;
  }
}

2 Answers

The first task was to make the method getTitleFromObject accept a String object and return it as is. You have to keep that functionality and expand it in the second task. You don't replace what you did in task 1, you add to it.

So your method has to check:

  • "is obj a String?" => behavior for Strings
  • "is obj a BlogPost?" => behavior for BlogPosts

thanks,

You're welcome!

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