Don't know how to cast object to find equality

Question

Hi there,

I'm trying to complete this task 2 of 3 on this challenge. I'm supposed to cast the Object to see if it's equal, and then return 0. I'm really stuck on what to do. Could you help with this? Thanks!

com/example/BlogPost.java

package com.example;

import java.util.Date;

public class BlogPost implements Comparable {
  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;
  }

  @Override
  public int compareTo(Object obj) {
      return 1;
    }

  int Object = obj.compareTo(other.obj);
    if (obj == 0) {
      return obj.compareTo(other.obj);
    }

  public String[] getWords() {
    return mBody.split("\\s+");
  }

  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;
  }
}

Answer 1 · 2015-09-01T12:41:41Z

September 1, 2015 12:41pm

All you need is this:

public int compareTo(Object obj) {
  if (obj == this) {
    return 0;
  }
  return 1;
}

Remove these lines:

  int Object = obj.compareTo(other.obj);
    if (obj == 0) {
      return obj.compareTo(other.obj);
    }

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Gabriel E

Gabriel E

Don't know how to cast object to find equality

1 Answer

Kristian Terziev

Kristian Terziev