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Java Java Data Structures Getting There Type Casting

Not able to understand the second challenge task. Therefore not able to clear it.

I have type casted the obj object but not able to understand how to return the value of getTitle.

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;
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.
    if(obj instanceof String)
      return (String) obj;
    BlogPost anotherInstant=(BlogPost) obj;

    String result = getTitle[2];
    return result;

2 Answers

Wan Faruq Adiputra
Wan Faruq Adiputra
2,938 Points

Question is if the obj is indeed a BlogPost object, then return the value of getTitle. getTitle() is the method in BlogPost class which return a String.

Since you already downcast obj into BlogPost anotherInstant. You just need to add the use of anotherInstant.getTitle();

PS: you may need another if statement. ;)

@Wan Faruq Adiputra Thanks that challange is down i implemented that.