I've come across this problem a few times myself. What happened is that intellij lost the module in my project settings. Here's my steps to fix it:
File -> Project Structure -> Click on modules (notice empty list) -> Click on '+' -> Click on import module -> Find existing myProj.iml
Answer from SnellyBigoda on Stack OverflowJetBrains
jetbrains.com › help › idea › project-tool-window.html
Project tool window | IntelliJ IDEA Documentation
April 22, 2026 - Project view. This view displays all the project items along with their dependencies (SDKs and libraries) . The emphasis is on the directory structure, although the packages are also shown.
Top answer 1 of 12
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I've come across this problem a few times myself. What happened is that intellij lost the module in my project settings. Here's my steps to fix it:
File -> Project Structure -> Click on modules (notice empty list) -> Click on '+' -> Click on import module -> Find existing myProj.iml
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If you are working on a software development project where you are using Maven, Gradle, Flash Builder etc., the below mentioned steps should restore the project structure:
- Ctrl+Alt+Shift+S (or) File>>Project Structure
- Select 'Modules' in 'Project Settings'
- Alt+Insert (or) Select '+' to add a new module
- Select 'Import Module'
- Select the folder you want to import the module from(Generally the parent folder)
- Select 'Import module from external model' and the corresponding external model
This resets your project structure.
How to see java files in project tree in intellij idea? - Stack Overflow
Check in "Project Structure" (ctrl+alt+shift+S) if you didn't set your source as "Excluded" (in Modules, sources). ... If you are develop a maven project, you could run mvn idea:idea and then open the project in your Intellij, the source files and the project tree would become the shape you like. More on stackoverflow.com
Not showing Project Structure in IntelliJ IDEA - Stack Overflow
I am a new to IntelliJ IDEA and somehow my project structure doesn't appear where It should be. Someone know how to fix this please? I want it to appear left corner where red circle: ... You have hidden the tool window buttons. To show them again press Alt+Alt (and keep holding) or click on the bottom left corner icon. Or use View ... More on stackoverflow.com
Is there a way the prevent the folders from collapsing in the project view? It is very annoying to have to browse down through the hierarchy all the time.
Cmd+shift+O works for directories if you add a slash and will expand the tree if you select one. More on reddit.com
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April 24, 2016Intellij slow in updating sbt dependencies
Are you completely up to date with the scala plugin? I've heard its been improved a lot in the most recent update. More on reddit.com
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April 16, 2015Videos
02:27
IntelliJ IDEA Beginner Tutorial | Project Structure - YouTube
Show tree structure of packages in IntelliJ IDEA instead of a ...
11:16
Create an IntelliJ project with Sub Modules & Fix project structure ...
03:43
Java project folder structure in IntelliJ IDEA - YouTube
15:03
Intellij IDEA Tutorial: Projects and modules overview - YouTube
From Code to Clarity With the Redesigned Structure Tool ...
JetBrains
jetbrains.com › help › idea › viewing-structure-of-a-source-file.html
File structure | IntelliJ IDEA Documentation
September 12, 2025 - Open a file in the editor or select it in the Project tool window. Press Alt+7 or go to View | Tool Windows | Structure in the main menu.
JetBrains
jetbrains.com › help › idea › project-settings-and-structure.html
Project structure settings | IntelliJ IDEA Documentation
November 18, 2025 - Project structure settings include the SDK, project compiler output paths, and project libraries.
JetBrains
blog.jetbrains.com › home › intellij idea › tips and tricks for the project tool window
Tips and Tricks for the Project Tool Window - The JetBrains Blog
August 12, 2025 - In IntelliJ IDEA, the Project tool window is usually located on the left. You can open it by pressing ⌘+1 on macOS or Alt+1 on Windows and Linux, or by selecting View | Tool Windows | Project from the main menu.
JetBrains
intellij-support.jetbrains.com › hc › en-us › community › posts › 360009346159-Project-Structure-Split-View
Project / Structure Split View – IDEs Support (IntelliJ Platform) | JetBrains
July 14, 2020 - In previous versions of Intellij, it was possible to set split view to view both project sources and the source (java) structure. The current view (2020.1), the Options View doesn't seem to have it anymore.
JetBrains
plugins.jetbrains.com › docs › intellij › tree-structure-view.html
Modifying Project View Structure | IntelliJ Platform Plugin SDK
April 9, 2025 - The steps below show how to filter out and keep visible only text files and directories in the Project View Panel. ... grouping/nesting related entries, e.g., GUI Designer .form file and related bound class (FormMergerTreeStructureProvider). provide additional "nested" nodes, e.g., contents of custom archive file · To provide custom Structure View behaviour, implement TreeStructureProvider with the nodes filtering logic in modify() method.
LinkedIn
linkedin.com › learning › intellij-idea-community-edition-essential-training-2 › explore-the-structure-of-a-java-project
Explore the structure of a Java project - IntelliJ IDEA Community Edition Essential Training Video Tutorial | LinkedIn Learning, formerly Lynda.com
January 26, 2021 - Now, as you add more capabilities to your project say if you're using dependencies and you're using the Maven or Gradle Frameworks, you'll see more directories and more configuration files. This is just the simplest structure that you're going to see when you create a brand new Java project in IntelliJ IDEA.
Gitbooks
gavincook.gitbooks.io › intellij-platform-sdk-devguide › content › basics › project_structure.html
Project Structure · IntelliJ Platform SDK DevGuide - gavincook
For more information about facets ... in the IntelliJ IDEA Web Help. From the plugin developer's point of view, a project can be thought of as follows: A project consists of one or several modules. Each module includes the plugin source code and so called order entries that refer to SDK and libraries the module uses. By default, all modules uses the project SDK. In addition, a module can optionally have a set of facets. This document explains how you can explore and change the structure of projects ...
JetBrains
blog.jetbrains.com › idea › 2009 › 03 › quick-navigation-to-project-structure
Quick Navigation to Project Structure | The IntelliJ IDEA Blog
March 26, 2009 - To change settings of a module that hosts the file you are currently editing, just press Alt+F1, 7 or open the View menu, select Select In and click Project Structure.IntelliJ IDEA will open the Proje
JetBrains
jetbrains.com › guide › java › tips › structure-tool-window
Structure Tool Window - JetBrains Guide
March 5, 2024 - (documentation) IntelliJ IDEA Help - Structure tool window · Open File · Open a file from the Project tool window. File Structure · Get a quick overview of the structure of your class file. Select Opened File ·
Intellij-sdk-docs-cn
intellij-sdk-docs-cn.github.io › intellij › sdk › docs › tutorials › tree_structure_view.html
Tree Structure View / IntelliJ Platform SDK DevGuide
February 19, 2020 - Series of step below show how to filter out and keep visible only text files and directories in the Project View Panel. Create an empty plugin project. See Creating a Plugin Project. Add new treeStructureProvider extension to the plugin.xml · <extensions defaultExtensionNs="com.intellij"> <treeStructureProvider implementation="org.intellij.sdk.treeStructureProvider.TextOnlyTreeStructureProvider"/> </extensions> To provide custom Structure View behaviour you need to implement TreeStructureProvider interface.
Top answer 1 of 5
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Under the intelliJ IDEA 14.0.3 community edition, upon launch I don't see my project folders. I found by going into
View > Tool Windows > Project
seems to show the folder structure.. Same as ALT + 1
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Below the menubar , on the left there is a dropdown which in your case may be showing "packages" now (because you can see the packages). From the same dropdown, select "Project Files" below "SCOPES"
JetBrains
plugins.jetbrains.com › docs › intellij › project-structure.html
Project Structure | IntelliJ Platform Plugin SDK
March 29, 2023 - Redirecting… · Click here if you are not redirected
JetBrains
blog.jetbrains.com › idea › 2024 › 11 › from-code-to-clarity-with-the-redesigned-structure-tool-window
From Code to Clarity With the Redesigned Structure Tool Window | The IntelliJ IDEA Blog
November 20, 2024 - This same context would be invaluable for developers. In IntelliJ IDEA, the main code navigation tool is the Project tool window. It provides a code-level view of the project, including folders, packages, and files.
Java Code Geeks
examples.javacodegeeks.com › home › java development › desktop java › ide
IntelliJ IDEA Show File in Project View Example - Java Code Geeks
November 9, 2023 - Project view. In this view, all the project items along with their dependencies (SDKs and libraries) are shown. The emphasis is on the directory structure (though the packages are also shown).
JetBrains
jetbrains.com › guide › java › tutorials › configuring-intellij-idea › configuring-project-structure
Configuring Project Structure - JetBrains Guide
February 17, 2023 - The Project Structure is where you can change your Java SDK, Language Level. and more
JetBrains
intellij-support.jetbrains.com › hc › en-us › community › posts › 206849725-How-can-i-get-the-Structure-Window-to-appear-in-the-far-left-panel-directly-under-the-Project-Window
How can i get the Structure Window to appear in the far left panel directly under the Project Window ? – IDEs Support (IntelliJ Platform) | JetBrains
October 26, 2013 - As for "gear" button: you can setup "view mode" and placement ("Move to" menu) here. For example, "Project" has standard place "Left Top" and Structure is located in "Left Bottom" so you can use them both at the same time, one above the other.
Java Code Geeks
examples.javacodegeeks.com › home › java development › desktop java › ide
IntelliJ IDEA Project Structure Example - Java Code Geeks
November 9, 2023 - If a module has more than one content root, selecting a content root in the right-hand pane also switches the tree view in the left-hand pane. That is, when you click somewhere within the content root area, the folder structure of this particular content root is shown in the left-hand pane. ... Subscribe to our newsletter and download the IntelliJ IDEA Handbook right now!