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Java Java Data Structures - Retired Getting There Type Casting

Maati Grouni
Maati Grouni
2,481 Points

The method getTitleFromObject will be called and passed a String and/or a com.example.BlogPost. For this first task, ret

does anyone can tell why my code does not work? I could not tell why for some reason. thank you

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


    }
      return result;

    }

    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 = "";
    return result;
  }
}

1 Answer

Marko Medic
Marko Medic
5,656 Points

It's because you wrote your method in BlogPost.java instead of TypeCastChecker.java. You already have the method pre-made in 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) { // <-- here!!
    // Fix this result variable to be the correct string.
    String result = "";
    return result;
  }
}