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Java Java Data Structures - Retired Organizing Data Comparable

cant get this one right

Please check the third part what did I do wrong there.

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;
  }

  public int compareTo(Object obj){

    BlogPost bp = (BlogPost) obj;
    if(equals(bp)){
      return 0;
    }

    int daate =  mCreationDate.compareTo(bp.mCreationDate);
    if(equals(daate)){
      return 0;
    }
    return 1;
  }


  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;
  }
}

2 Answers

Patrik Horváth
Patrik Horváth
11,110 Points

Never use equals on object its not passible ! only if you Override equals method you have here Interface and you have to check OBJECT equals OBJECT 2 so ? "instanceof"

== is for numbers ! or logical value
.equals  is fot STRINGS 
instanceof is for Object :) 
   if (object instanceof BlogPost)

Thanks, buddy . Do you also recommend any place where I can practice more java or do some projects. I want to improve more

Sławomir Lasik
Sławomir Lasik
7,792 Points

Yes. Just code, make mistakes and learn from them ;)