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

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

New No-Code Track! 🚀start learning today!

🌟 Dreaming of a bright future? 🎓 Ask about the Treehouse Scholarship program! 🚀

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

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

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
    • College Credit
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
  • Resources
    Chevron
    • Career Toolbox
    • CodeForward
    • Free Treehouse Near Me
    • Jobs
    • Blog
    • Support
    • About
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks College Credit
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Career Toolbox CodeForward Free Treehouse Near Me Jobs Blog Support About
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • Android
      • • 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
    • Showing results for:
    • Java
    • Java Lists
    • Close
  • Ryan Johnson
    Ryan Johnson
    4,173 Points

    Unsure what the quiz question is asking of me, any help appreciated

    Posted on Aug 8, 2023 by Ryan Johnson
    Ryan Johnson
    4,173 Points
    • Java
    • Java Lists
    • Java Lists
    • Java Lists Quiz

    2 Answers

  • Zipporah Najar
    Zipporah Najar
    6,319 Points

    I'm getting an error -- Error: Could not find or load main class Main -- Is there something I missed?

    Posted on May 29, 2021 by Zipporah Najar
    Zipporah Najar
    6,319 Points
    • Java
    • Java Lists
    • Java Lists
    • List Basics: Adding, Removing, and Accessing

    2 Answers

  • Tomek Skrent
    Tomek Skrent
    1,897 Points

    How to declare racks variable as a list of Rocks ?

    Posted on Sep 2, 2020 by Tomek Skrent
    Tomek Skrent
    1,897 Points
    • Java
    • Java Lists
    • Java Lists
    • Java Lists Quiz

    1 Answer

  • Omar Ahmed
    Omar Ahmed
    4,409 Points

    I put in exactly what was in the review video but it still wont work?

    Posted on May 30, 2020 by Omar Ahmed
    Omar Ahmed
    4,409 Points
    • Java
    • Java Lists
    • Java Lists
    • Java Lists Quiz

    1 Answer

  • Dragan Vujic
    Dragan Vujic
    2,171 Points

    For ( String name : dogNames) { System.out.println (name); } why this is not correct ?

    Posted on Apr 23, 2020 by Dragan Vujic
    Dragan Vujic
    2,171 Points
    • Java
    • Java Lists
    • Java Lists
    • Java Lists Quiz

    1 Answer

  • Ajay Shah
    PLUS
    Ajay Shah
    Courses Plus Student 1,822 Points

    help me with this problem

    Posted on Oct 7, 2019 by Ajay Shah
    Ajay Shah
    Courses Plus Student 1,822 Points
    • Java
    • Java Lists
    • Java Lists
    • Java Lists Quiz

    0 Answers

  • Genius Mutero
    Genius Mutero
    15,121 Points

    Failing to declare a rock variable as a list

    Posted on Jul 25, 2019 by Genius Mutero
    Genius Mutero
    15,121 Points
    • Java
    • Java Lists
    • Java Lists
    • Java Lists Quiz

    2 Answers

  • Munashe Mandizvidza
    Munashe Mandizvidza
    3,162 Points

    Fill in the blank to declare the rocks variable as a List that contains Rocks:

    Posted on Jul 25, 2019 by Munashe Mandizvidza
    Munashe Mandizvidza
    3,162 Points
    • Java
    • Java Lists
    • Java Lists
    • Java Lists Quiz

    1 Answer

  • Andrea Wiley
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    Andrea Wiley
    Python Development Techdegree Graduate 10,888 Points

    What is going on here?

    Posted on Apr 28, 2019 by Andrea Wiley
    .a{fill-rule:evenodd;}techdegree seal-36
    Andrea Wiley
    Python Development Techdegree Graduate 10,888 Points
    • Java
    • Java Lists
    • Java Lists
    • Java Lists Quiz

    1 Answer

  • Max Green
    Max Green
    12,517 Points

    <> Information

    Posted on Mar 6, 2019 by Max Green
    Max Green
    12,517 Points
    • Java
    • Java Lists
    • Java Lists
    • List Basics: Adding, Removing, and Accessing

    2 Answers

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

    Treehouse

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

See Full Catalogue

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
  • Python Development
  • Data Analysis
  • UX Design

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
  • ...see more

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
  • ...see more

Explore

  • Plans
  • Affiliates
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2025 Treehouse Island, Inc.