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Java Java Data Structures - Retired Organizing Data Comparable

Kshatriiya .
Kshatriiya .
1,464 Points
Posted by Kshatriiya .
Kshatriiya .
1,464 Points

Please check my code

To sort BlogPost in chronological order 

public int compareTo(Object obj) {
BlogPost other = (BlogPost) obj;

return 1;
if (equals(other)) {
  return 0;
} else {
return mCreationDate.compareTo(other.mCreationDate);
}

}

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 other = (BlogPost) obj;


    if (equals(other)) {
      return 0;
    } else {
    return mCreationDate.compareTo(other.mCreationDate);
    }


  }



  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;
  }
}

thank you

1 Answer

anil rahman
anil rahman
7,786 Points
anil rahman
anil rahman
7,786 Points 
    public int compareTo(Object obj) {
       BlogPost other = (BlogPost) obj;

       if (equals(other)) { --do the equality check
          return 0; --if true return 0
       }
       return 1; --otherwise return default 1

    }