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Start your free trialSean Flanagan
33,235 PointsTypecasting Challenge Task 1
Hi.
I've no idea how to do this. Can anyone help please?
Thanks.
Sean
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.
String result = "";
return result;
}
}
2 Answers
Jon Kussmann
Courses Plus Student 7,254 PointsHi Sean,
This is how I solved it. I first checked if 'obj' was a String using the instanceof keyword in Java. If it was the case, I returned the obj cast as a String like so:
if (obj instanceof String) {
return (String) obj;
}
I hope this helps, if not please let me know.
Michael Macdonald
34,265 PointsHi,
Thanks, I used this code as well, but I don't understand what:
String result = ""; return result;
does at the end of the method.. Is there because we need to return something...?
Sean Flanagan
33,235 PointsSean Flanagan
33,235 PointsHi Jon.
I pasted your code right below the comment line and it worked. Thank you. :-)