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Start your free trialMatthew Earlywine
2,560 PointsStruggling on Task 2
In this step, cast the Object passed to the compareTo method to a com.example.BlogPost. Check for equality first, if they are equal return 0. Leave the default return of 1 in place for this step.
Not sure what to really do here. I thought I would follow along with my workspace but I am not sure what I am doing wrong.
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 blogpost = (BlogPost) obj;
if (equals(other)) {
return 0;
}
}
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;
}
}
3 Answers
jcorum
71,830 PointsYour parameter for the compareTo() function is obj, but you say if (equals(other)) { . . .
` Here's the finished function:
public int compareTo(Object obj) {
BlogPost blogpost = (BlogPost) obj;
if (equals(obj)) {
return 0;
} else {
return mCreationDate.compareTo(blogpost.mCreationDate);
}
}
Matthew Earlywine
2,560 PointsThanks!
Imran Asif
7,514 Pointspublic int compareTo(Object obj){ BlogPost bp= (BlogPost)obj; if(equals(bp)){ return 0; }
return 1;
steve kevin arias serrano
9,037 Pointssteve kevin arias serrano
9,037 Pointsthis is the same tha you code but i don't understand why you us obj instead blogpost BlogPost blogpost = (BlogPost) obj; if(equals(blogpost)) { return 0; } return mCreationDate.compareTo(blogpost.mCreationDate);
Bianca Christian
3,524 PointsBianca Christian
3,524 Pointswhy are you comparing the creation date