Visual Source Code

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Developers can add their code to Git and GitHub with a single click by creating a new GitHub repository, which is private by default. In addition, users can choose to create a local only git repository or add their code to an existing remote repository on GitHub and Azure DevOps.

Using GitHub with Visual Studio Code lets you share your source code and collaborate with others. GitHub integration is provided through the GitHub Pull Requests and Issues extension.

Visual Studio Code A powerful, lightweight code editor for cloud development GitHub and Azure World’s leading developer platform, seamlessly integrated with Azure Visual Studio Subscriptions Access Visual Studio, Azure credits, Azure DevOps, and many other resources for. FreeVbCode.Com is a code repository for free Visual Basic code and samples. Visual Basic examples and articles are freely available to download and review.

To get started with the GitHub in VS Code, you'll need to create an account and install the GitHub Pull Requests and Issues extension. In this topic, we'll demonstrate how you can use some of your favorite parts of GitHub without leaving VS Code.

If you're new to source control and want to start there, you can learn about VS Code's source control integration.

Getting started with GitHub Pull Requests and Issues

Once you've installed the GitHub Pull Requests and Issues extension, you'll need to sign in. Follow the prompts to authenticate with GitHub in the browser and return to VS Code.

If you are not redirected to VS Code, you can add your authorization token manually. In the browser window, you will receive your authorization token. Copy the token, and switch back to VS Code. Select Signing in to github.com... in the Status bar, paste the token, and hit Enter.

Setting up a repository

Cloning a repository

You can search for and clone a repository from GitHub using the Git: Clone command in the Command Palette (⇧⌘P (Windows, Linux Ctrl+Shift+P)) or by using the Clone Repository button in the Source Control view (available when you have no folder open).

Authenticating with an existing repository

Enabling authentication through GitHub happens when you run any Git action in VS Code that requires GitHub authentication, such as pushing to a repository that you're a member of or cloning a private repository. You don't need to have any special extensions installed for authentication; it is built into VS Code so that you can efficiently manage your repository.

When you do something that requires GitHub authentication, you'll see a prompt to sign in:

Follow the steps to sign into GitHub and return to VS Code. If authenticating with an existing repository doesn’t work automatically, you may need to manually provide a personal access token. See Personal Access Token authentication for more information.

Note that there are several ways to authenticate to GitHub, including using your username and password with two-factor authentication (2FA), a personal access token, or an SSH key. See About authentication to GitHub for more information and details about each option.

Editor integration

Hovers

When you have a repository open and a user is @-mentioned, you can hover over that username and see a GitHub-style hover.

There is a similar hover for #-mentioned issue numbers, full GitHub issue URLs, and repository specified issues.

Suggestions

User suggestions are triggered by the '@' character and issue suggestions are triggered by the '#' character. Suggestions are available in the editor and in the Source Control view's input box.

The issues that appear in the suggestion can be configured with the GitHub Issues: Queries (githubIssues.queries) setting. The queries use the GitHub search syntax.

You can also configure which files show these suggestions using the settings GitHub Issues: Ignore Completion Trigger (githubIssues.ignoreCompletionTrigger) and GitHub Issues: Ignore User Completion Trigger (githubIssues.ignoreUserCompletionTrigger). These settings take an array of language identifiers to specify the file types.

Pull requests

From the Pull Requests view you can view, manage, and create pull requests.

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The queries used to display pull requests can be configured with the GitHub Pull Requests: Queries (githubPullRequests.queries) setting and use the GitHub search syntax.

Creating Pull Requests

You can use the GitHub Pull Requests: Create Pull Request command or use the + button in the Pull Requests view to create a pull request. If you have not already pushed your branch to a remote, the extension will do this for you. You can use the last commit message, the branch name, or write a custom title for the pull request. If your repository has a pull request template, this will automatically be used for the description.

Reviewing

Pull requests can be reviewed from the Pull Requests view. You can assign reviewers and labels, add comments, approve, close, and merge all from the pull request description.

From the description page, you can also easily checkout the pull request locally using the Checkout button. This will add a new Changes in Pull Request view from which you can view diffs of the current changes as well as all commits and the changes within these commits. Files that have been commented on are decorated with a diamond icon. To view the file on disk, you can use the Open File inline action.

The diff editors from this view use the local file, so file navigation, IntelliSense, and editing work as normal. You can add comments within the editor on these diffs. Both adding single comments and creating a whole review is supported.

Issues

Creating issues

Issues can be created from the + button in the Issues view and by using the GitHub Issues: Create Issue from Selection and GitHub Issues: Create Issue from Clipboard commands. They can also be created using a Code Action for 'TODO' comments.

You can configure the trigger for the Code Action using the GitHub Issues: Create Issue Triggers (githubIssues.createIssueTriggers) setting.

The default issue triggers are:

Working on issues

From the Issues view, you can see your issues and work on them. By default, when you start working on an issue, a branch will be created for you. You can configure the name of the branch using the GitHub Issues: Working Issue Branch (githubIssues.workingIssueBranch) setting. The commit message input box in the Source Control view will be populated with a commit message, which can be configured with GitHub Issues: Working Issue Format SCM (githubIssues.workingIssueFormatScm).

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If your workflow doesn't involve creating a branch, or if you want to be prompted to enter a branch name every time, you can skip that step by turning off the GitHub Issues: Use Branch For Issues (githubIssues.useBranchForIssues) setting.

Support for Java in Visual Studio Code is provided through a wide range of extensions. Combined with the power of core VS Code, these extensions give you a lightweight and performant code editor that also supports many of the most common Java development techniques.

This article will give you an overview of different capabilities of Visual Studio Code for Java developers. For a quick walkthrough of editing, running, and debugging a Java program with Visual Studio Code, use the button below.

Overview

VS Code provides essential language features such as code completion, refactoring, linting, formatting, and code snippets along with convenient debugging and unit test support. VS Code also integrates with tooling and frameworks such as Maven, Tomcat, Jetty, and Spring Boot. Leveraging the power of Visual Studio Code, Java developers get an excellent tool for both quick code editing and also the full debugging and testing cycle. It's a great choice for your Java work if you're looking for a tool which:

  • Is fast, lightweight, free, and open source.
  • Supports many other languages, not just Java.
  • Helps start your Java journey without installing and learning a complex IDE.
  • Provides great microservices support including popular frameworks, container tooling, and cloud integration.
  • Offers team-based collaboration features such as Visual Studio Live Share.
  • Improves your productivity through IntelliSense and other code-aware editing features.

Install Visual Studio Code for Java

To help you set up quickly, we recommend you use the Coding Pack for Java, which is the bundle of VS Code, the Java Development Kit (JDK), and a collection of suggested extensions by Microsoft. The Coding Pack can also be used to fix an existing development environment.

Install the Coding Pack for Java - macOS

Note: The Coding Pack for Java is only available for Windows and macOS. For other operating systems, you will need to manually install a JDK, VS Code, and Java extensions.

If you have already installed VS Code and want to add Java support to it, we recommend to use Java Extension Pack, a collection of extensions suggested by Microsoft:

Alternatively, you can add Java language support to VS Code by installing the popular Java extensions by yourself.

Download VS Code - If you haven't downloaded VS Code yet, quickly install for your platform (Windows, macOS, Linux).

There are also other popular Java extensions you can pick for your own needs, including:

Thanks to the great Java community around VS Code, the list doesn't end there. You can search for more Java extensions easily within VS Code:

  1. Go to the Extensions view (⇧⌘X (Windows, Linux Ctrl+Shift+X)).
  2. Filter the extensions list by typing 'java'.

This document describes some of the key features included in those Java extensions.

Getting started

Visual source code editor

NOTE: If you are using VS Code on Windows and want to take advantage of the Windows Subsystem for Linux, see Developing in WSL.

Before you start, you must have the Java SE Development Kit (JDK) on your local environment. To run the VS Code for Java extension, Java SE 11 or above version is required; for projects, VS Code for Java supports projects with version 1.5 or above. For how to configure, refer to Configure JDK.

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For developers new to Java or new to VS Code, we provide a Getting Started experience. Once you've installed the Java Extension Pack, you can open the Getting Started experience from within VS Code with the Java: Getting Started command from the Command Palette. Open the Command Palette (⇧⌘P (Windows, Linux Ctrl+Shift+P)) and type 'Java: Getting Started'.

Working with Java source files

You can use VS Code to read, write, run, and debug Java source file(s) without creating a project. VS Code for Java supports two modes, lightweight and standard. Lightweight mode is ideal for scenarios that only deal with source file(s). If you want to work with a full scale project, standard mode will be required. You can easily switch from lightweight mode to standard mode, when needed. To learn more, see Lightweight Mode.

Working with Java project

There are three things you must understand to work with Java in VS Code:

  1. How does VS Code handle Workspaces?
  2. How does VS Code handle Java?
  3. How does VS Code handle Workspaces that contain Java?

VS Code Workspaces

In Visual Studio Code, a 'Workspace' means a collection of one or more filesystem folders (and their children) and all of the VS Code configurations that take effect when that 'Workspace' is open in VS Code. There are two kinds of 'Workspaces' in VS Code, 'folder workspaces' and 'multi-root workspaces'.

A 'folder workspace' is presented by VS Code when you open a filesystem folder (directory) in VS Code.

A 'multi-root workspace' can refer to multiple folders (directories) from disparate parts of the file system and VS Code displays the contents of the folder(s) of the workspace together in the File Explorer. To learn more, see Multi-root Workspaces.

Java project in VS Code

In contrast to IDEs such as IntelliJ IDEA, NetBeans, or Eclipse, the concept of a 'Java project' is provided entirely by extensions, and is not a core concept in the base VS Code. When working with 'Java projects' in VS Code, you must have the necessary extensions installed to work with those project files.

For example, Maven, Eclipse, and Gradle Java projects are supported through Language Support for Java(TM) by Red Hat, by utilizing M2Eclipse, which provides Maven support, and Buildship, which provides Gradle support through the Eclipse JDT Language Server.

With Maven for Java, you can generate projects from Maven Archetypes, browse through all the Maven projects within your workspace, and execute Maven goals easily from an embedded explorer. Projects can also be created and managed with the Project Manager for Java extension.

Visual Studio Code also supports working with standalone Java files outside of a Java project, described in the Java Tutorial with VS Code.

VS Code Workspaces that contain Java project

Assuming the necessary Java extensions are installed, opening a VS Code workspace that contains Java artifacts will cause those extensions to understand those artifacts and present options for working with them.

More details about Java project support can be found in Java Project Management in Visual Studio Code and Build Tools.

Editing

Code Navigation

Java in Visual Studio Code also supports source code navigation features such as search for symbol, Peek Definition, and Go to Definition. The Spring Boot Tools extension provides enhanced navigation and code completion support for Spring Boot projects.

One of the key advantages of VS Code is speed. When you open your Java source file or folder, within a few seconds, with the help of Lightweight Mode, you will be able to navigate your code base with Outline view as well as commands such as Go to Definition and Go to Reference. This is especially useful when you open a project for the first time.

Code Completion

IntelliSense is a general term for language features, including intelligent code completion (in-context method and variable suggestions) across all your files and for built-in and third-party modules. VS Code supports code completion and IntelliSense for Java through Language Support for Java(TM) by Red Hat. It also provides AI-assisted IntelliSense called IntelliCode by putting what you're most likely to use at the top of your completion list.

See also in Java Code Navigation and Editing. VS Code also supports a range of Refactoring and Linting features.

Debugging

Debugger for Java is a lightweight Java Debugger based on Java Debug Server. It works with Language Support for Java by Red Hat to allow users to debug Java code within Visual Studio Code.

Starting a debugging session is easy, click on the Run|Debug button available at the CodeLens of your main() function, or press F5. The debugger will automatically generate the proper configuration for you.

Although it's lightweight, the Java debugger supports advanced features such as expression evaluation, conditional breakpoints, and hot code replacement. For more debugging related information, visit Java Debugging.

Testing

With the support from the Java Test Runner extension, you can easily run, debug, and manage your JUnit and TestNG test cases.

For more about testing, read Testing Java.

Spring Boot, Tomcat, and Jetty

Visual Source Code Java

To further improve your Java productivity in VS Code, there are extensions for most popular frameworks and tools such as Spring Boot, Tomcat, and Jetty created by the community.

The Tomcat extension includes an explorer to easily navigate and manage your Tomcat servers. You can create, start, debug, stop, and rename your Tomcat server with the extension.

See Application Servers to learn more about support for Tomcat and Jetty as well as other application servers with VS Code.

Spring Boot support is provided by Pivotal. There are also Spring Initializr Java Support and Spring Boot Dashboard extensions available from Microsoft to further improve your experience with Spring Boot in Visual Studio Code.

See Spring Boot with VS Code to learn more about Spring Boot support with VS Code and also Deploy to Azure Web Apps or Deploy to Azure Spirng Cloud to learn more about deploying Spring apps to Azure from VS Code.

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Learn more about Java in VS Code

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Read on to find out more about Visual Studio Code:

  • Basic Editing - Learn about the powerful VS Code editor.
  • Code Navigation - Move quickly through your source code.
  • Tasks - use tasks to build your project and more
  • Debugging - find out how to use the debugger with your project