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Start your free trialChris Gauthier
Courses Plus Student 6,434 PointsStuck with Objects and packages in Java Datastructures
Im stuck getting the code right for object typcasting. I believe i understand the concept, but im not sure i have everything yet.
Help would be appreciated.
Chris
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;
String returnString = getTitleFromObject("Testing", new com.example.BlogPost)
public Object getTitleFromObject ( (String passedopj) || (String passedob2 && com.example.BlogPost)) {
if (instanceof passedobj == "String") {
return ((String)) passedobj;
}
if (passedobj2 && instanceof passedobj2 == "String") {
return ((String)) passedobj2;
}
if ( (passedobj2 && instanceof passwdobj2 == "String");
return ((String)) passedobj2;
else {
return passedobj2;
}
if ( com.example.BlogPost && instanceof (com.example.BlogPost) == "String") {
return ((String)) com.example.BlogPost;
}
else {
return com.example.BlogPost;
}
}
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
Michael Clark
16,324 PointsHI Chris
Looks like you need to put the code in the TypeCastChecker.java. For example to pass the first task
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 = "";
if (obj instanceof java.lang.String){
result = (String) obj;
}
return result;
}
}```
Chris Gauthier
Courses Plus Student 6,434 PointsYup, got both challenges from this one.
Thanks Chris