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Java Java Data Structures Getting There Type Casting

Oops! It looks like Task 1 is no longer passing.

Oops! It looks like Task 1 is no longer passing.

String result = ""; if (obj instanceof String) { return (String) obj; } else { result = ((BlogPost) obj).getTitle(); } return result; }

Why? :(

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 = true;
  public static boolean HINT_2_ENABLED = false;

  public static String getTitleFromObject(Object obj) {
  String result = ""; // use the String to store the Title from BlogPost
     if (obj instanceof String) {
      return (String) obj;
    } else {
      result = ((BlogPost) obj).getTitle(); // store the Title from BlogPost into result
    }
    return result; // return Title if obj is a BlogPost
    }

}

1 Answer

andren
andren
28,558 Points

It's because you enabled one of the hints. To quote one of the comments in the file:

NOTE: You must set all the hints to false to complete the exercise.

If you change the first hint to false then your code will pass.