Skip to main content

NOTICE: On Friday Nov 6, Workspaces will be temporarily unavailable for maintenance.

🚀 In our NEW AI Bootcamp you'll build a working app in 28 days, no experience required. Free to all subscription levels.

✨ Earn college credits in Cybersecurity, JS, HTML, CSS and Python

Join the Treehouse affiliate program and earn 25% recurring commission! 🤑

  • Treehouse Logo
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
    • All Courses
    • Tracks
    • AI Bootcamp
    • College Credit
    • Techdegree Bootcamps
    • Front End Development
    • Full Stack JavaScript
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
    • Explore
    • Career Toolbox
    • Free Treehouse Near Me
    • Affiliates
    • Blog
    • Support
    • About
    • Learn
    • Beginner's Guide to Coding
    • Data Analysis with SQL & Python
    • Front-End Web Development
    • Python Programming Basics
    • Techdegree Bootcamp Overview
    • UX Design Fundamentals
    • AI Tools for Beginners
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks AI Bootcamp College Credit
  • Techdegree Bootcamps Front End Web Development Full Stack JavaScript
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Explore Career Toolbox Free Treehouse Near Me Affiliates Blog Support About
    Learn Beginner's Guide to Coding Data Analysis with SQL & Python Front-End Web Development Python Programming Basics Techdegree Bootcamp Overview UX Design Fundamentals AI Tools for Beginners
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
Loading banner... Start your free trial at Treehouse
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • APIs
      • • Coding for Kids
      • • College Credit
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Game Development
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • No-Code
      • • PHP
      • • Professional Growth
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
      • • Swift
      • • Vibe Coding
  • CamilleMarie Paugam
    CamilleMarie Paugam
    1,521 Points

    Unsure how to fix the code after realizing it needs to be cast. I am having a hard time understanding its syntax

    Posted June 28, 2023 3:39am by CamilleMarie Paugam
    CamilleMarie Paugam
    1,521 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    1 Answer

  • Chance Edward
    Chance Edward
    4,507 Points

    How would you fix this code?

    Posted June 20, 2023 5:46pm by Chance Edward
    Chance Edward
    4,507 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    1 Answer

  • Maryam Kamar
    Maryam Kamar
    2,549 Points

    I'm still unsure about what casting does :/

    Posted February 12, 2022 12:10pm by Maryam Kamar
    Maryam Kamar
    2,549 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    1 Answer

  • Bolatito Seriki
    Bolatito Seriki
    1,170 Points

    Please fill in the correct answer in each blank provided below.

    Posted September 4, 2020 1:53pm by Bolatito Seriki
    Bolatito Seriki
    1,170 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    0 Answers

  • Omar Ahmed
    Omar Ahmed
    4,409 Points

    which operator for the dog question

    Posted May 28, 2020 7:01am by Omar Ahmed
    Omar Ahmed
    4,409 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    1 Answer

  • Vuyolwenkosi Tshuma
    Vuyolwenkosi Tshuma
    4,830 Points

    I don't understand how my solution is incorrect

    Posted March 6, 2020 10:09am by Vuyolwenkosi Tshuma
    Vuyolwenkosi Tshuma
    4,830 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    1 Answer

  • Ajay Shah
    PLUS
    Ajay Shah
    Courses Plus Student 1,181 Points

    I am not getting it.

    Posted October 3, 2019 5:45pm by Ajay Shah
    Ajay Shah
    Courses Plus Student 1,181 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    1 Answer

  • Rafał Stasiak
    Rafał Stasiak
    3,763 Points

    Proper cast

    Posted July 31, 2019 3:45pm by Rafał Stasiak
    Rafał Stasiak
    3,763 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    1 Answer

  • Phoenix S.
    Phoenix S.
    2,456 Points

    I think there's a bug in the first Inheritance quiz

    Posted January 28, 2019 2:22pm by Phoenix S.
    Phoenix S.
    2,456 Points
    • Java
    • Inheritance in Java
    • Inheritance in Java
    • Everything Inherits from Object

    3 Answers

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
SEE ALL

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
SEE ALL

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
SEE ALL

About Us

  • About
  • Blog
  • Community
  • Stories
  • Contact
  • Gift Card

Explore

  • Plans
  • Affiliates
  • Perks
  • Shop
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses

Treehouse is an online technology education platform founded in 2011. Treehouse offers more than 700 self-paced, video-based courses in web development, programming, data analysis, design, and AI, plus two project-based bootcamp programs in Front End Web Development and Full Stack JavaScript. Individual Treehouse plans start at $25 per month and include a 7-day free trial. Treehouse serves individual learners, businesses, schools, and public libraries. Cardholders at participating U.S. public libraries can use Treehouse for free. Select Treehouse courses, offered with University Pathways International, are recommended for college credit by ACE and NCCRS. Treehouse learners earn digital certificates for completed Tracks.

Terms & Conditions · Privacy · © 2026 Treehouse Island, Inc.
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
  • Discord