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

New No-Code Track! 🚀 New videos dropping every week—start learning today!

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

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

  • 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
    • Community Projects
    • Live Sessions
    • 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
  • Community Projects Live Sessions 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
  • Chance Edward
    Chance Edward
    4,507 Points

    Is intellji a free program?

    Posted June 25, 2023 9:54pm by Chance Edward
    Chance Edward
    4,507 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    1 Answer

  • Cade Mell
    Cade Mell
    1,544 Points

    I'm unable to run the program

    Posted April 15, 2022 5:11pm by Cade Mell
    Cade Mell
    1,544 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    0 Answers

  • Mustafa Khan
    Mustafa Khan
    6,224 Points

    Not working

    Posted July 6, 2018 1:13am by Mustafa Khan
    Mustafa Khan
    6,224 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    1 Answer

  • Geraldine Tanaka Munyoro
    Geraldine Tanaka Munyoro
    5,170 Points

    getting an error which is saying illegal static declaration in inner class.Modifier static is only allowed in constant

    Posted August 7, 2017 11:05am by Geraldine Tanaka Munyoro
    Geraldine Tanaka Munyoro
    5,170 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    0 Answers

  • Kenneth Phillips
    PLUS
    Kenneth Phillips
    Courses Plus Student 10,188 Points

    Problem with homedirectory

    Posted March 4, 2017 8:10pm by Kenneth Phillips
    Kenneth Phillips
    Courses Plus Student 10,188 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    2 Answers

  • Michael Stedman
    seal-mask
    .a{fill-rule:evenodd;}techdegree
    Michael Stedman
    Full Stack JavaScript Techdegree Student 13,838 Points

    I have two different JDKs on my Windows machine. Can I delete the older one, and move one?

    Posted January 30, 2017 8:35pm by Michael Stedman
    .a{fill-rule:evenodd;}techdegree
    Michael Stedman
    Full Stack JavaScript Techdegree Student 13,838 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    0 Answers

  • Christopher Mlalazi
    seal-mask
    .a{fill-rule:evenodd;}techdegree seal-36
    Christopher Mlalazi
    Front End Web Development Techdegree Graduate 17,305 Points

    Event Log

    Posted January 25, 2017 7:02am by Christopher Mlalazi
    .a{fill-rule:evenodd;}techdegree seal-36
    Christopher Mlalazi
    Front End Web Development Techdegree Graduate 17,305 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    2 Answers

  • Michel Bourgeois
    Michel Bourgeois
    731 Points

    F1 function key not working...

    Posted December 5, 2016 7:55am by Michel Bourgeois
    Michel Bourgeois
    731 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    2 Answers

  • Shafeeq Ahmed
    Shafeeq Ahmed
    6,058 Points

    F1 does not work

    Posted July 11, 2016 9:32am by Shafeeq Ahmed
    Shafeeq Ahmed
    6,058 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    1 Answer

  • Kshatriiya .
    Kshatriiya .
    1,464 Points

    Solved: Intellij auto completion/postfix completion not working

    Posted May 2, 2016 12:48am by Kshatriiya .
    Kshatriiya .
    1,464 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    1 Answer

  • Drew Warren
    Drew Warren
    4,565 Points

    Using your own website?

    Posted March 12, 2016 10:35pm by Drew Warren
    Drew Warren
    4,565 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    2 Answers

  • Greg Wienecke
    Greg Wienecke
    20,765 Points

    Error:(6, 8) java class Systemizer is public, should be declared in a file named Systemizer

    Posted February 2, 2016 3:59am by Greg Wienecke
    Greg Wienecke
    20,765 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    2 Answers

  • Courtney Mahida
    Courtney Mahida
    2,367 Points

    I'm trying to wrap my mind around what is considered 'internal' libraries in java and what is 'external' libraries?

    Posted January 25, 2016 6:46pm by Courtney Mahida
    Courtney Mahida
    2,367 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    1 Answer

  • Kimberly Rice
    Kimberly Rice
    11,656 Points

    I need help selecting a proper Home Directory for Intelli J version 15.0.3- getting error message.

    Posted January 22, 2016 10:56pm by Kimberly Rice
    Kimberly Rice
    11,656 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    3 Answers

  • Natasha Johnson
    Natasha Johnson
    12,285 Points

    The selected directory is not a valid home for JDK.

    Posted January 22, 2016 2:49am by Natasha Johnson
    Natasha Johnson
    12,285 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    2 Answers

  • Gabriel E
    Gabriel E
    8,916 Points

    How Do I get New JDK Project IntelliJ in Windows???

    Posted September 27, 2015 10:27pm by Gabriel E
    Gabriel E
    8,916 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    3 Answers

  • Robert Williger
    Robert Williger
    3,676 Points

    Getting error when running Systemizer ...

    Posted September 25, 2015 8:28pm by Robert Williger
    Robert Williger
    3,676 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    2 Answers

  • Sean Flanagan
    Sean Flanagan
    33,236 Points

    Directory

    Posted August 28, 2015 8:00pm by Sean Flanagan
    Sean Flanagan
    33,236 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    18 Answers

  • Rey Adronico Baguio
    Rey Adronico Baguio
    13,672 Points

    What would changing the project location do?

    Posted August 15, 2015 6:55am by Rey Adronico Baguio
    Rey Adronico Baguio
    13,672 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    1 Answer

  • Craig Nesty
    Craig Nesty
    167 Points

    on windows highlighting getProperties() method and hitting f1 opens up an online help system is this configurable?

    Posted June 10, 2015 4:00pm by Craig Nesty
    Craig Nesty
    167 Points
    • Java
    • Local Development Environments
    • Exploring Your IDE
    • Creating Your First Project

    4 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.