I expected the String value I passed in to be returned and it wasn't. Received '

Question

Why am I not returning a result ?

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

  }
}

Answer 1 · 2015-07-01T03:36:27Z

July 1, 2015 3:36am

Hi Tyree,

It looks like your code is no longer passing task 1. Keep the conditional for checking if obj is an instanceof String. If so, assign obj type cast as String to result.

For task 2, add an else if conditional that checks if obj is an instanceof BlogPost. If so, assign to result the return value from calling getTitle() on obj after type casting to BlogPost.

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

Please let me know if this helps or not.

Cheers

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Tyree' Stevenson

Tyree' Stevenson

I expected the String value I passed in to be returned and it wasn't. Received '

1 Answer

Robert Richey

Robert Richey

Tyree' Stevenson

Tyree' Stevenson

Tyree' Stevenson

Tyree' Stevenson

Robert Richey

Robert Richey