What’s New in IntelliJ IDEA 2020.2

IntelliJ IDEA 2020.2 lets you review and merge GitHub pull requests right from inside the IDE, quickly navigate between warnings and errors in a file with the Inspections widget, view the full list of issues in a current file with the Problems tool window, and get notified if your changes would break other files. You can use Jakarta EE, and get better support for Quarkus, Micronaut, and OpenAPI.

Java

Java 15 support

Java 15 support

Although the release of Java 15 will take place in September, IntelliJ IDEA 2020.2 is already prepared for it. Support for the Records feature has been updated and is now in its second preview. We’ve also added basic support for sealed classes. And, of course, IntelliJ IDEA provides full support for Text Blocks.

Jakarta EE Wizard

Related problems inlay hint

If you introduce errors by changing the signature of a class, method, or field that has external usages, the IDE will notify you with an inlay hint. Click on the related problems inlay hint, and the IDE will open the Find tool window with a list of all the related problems occurring in external files.

Scala 3 support

Ability to create multiple Structural Search and Replace inspections

The IDE allows you to find and, if necessary, replace blocks of code that match a specific pattern using Structural Search and Replace. With IntelliJ IDEA 2020.2, you can create multiple structural search templates as inspections. For each SSR inspection, you can specify the severity level, add descriptions, and enable or disable them separately.

Scala 3 support

Pinpointing causes of runtime exceptions

We’ve supplemented exception stack trace analysis with dataflow analysis. When you click on the stack trace, the IDE can take you to the exact place in your code where an exception appears, and it offers a suggestion that can help you find out why it happened.

Scala 3 support

Better autocompletion for Stream API methods

IntelliJ IDEA 2020.2 works even better with the Stream API. Instead of having to type 'stream()' and then type the right operation on the stream, you can start typing the stream method name within the collection itself, and IntelliJ IDEA will insert 'stream()' automatically. This works for any stream operation.

Scala 3 support

Scopes for Introduce Variable

With IntelliJ IDEA 2020.2, the Introduce Variable refactoring can selectively replace occurrences of a variable in an intermediate scope. You can now choose various options for replacement, rather than being limited to choosing only one or all occurrences. The editor highlights which occurrences will be replaced with a new variable as you hover over each of the choices.

Java Live Templates Clean-up

Java live templates clean-up

You no longer need to search for Java-related templates because the new Java node includes all plain, surround, other, output, and iterations groups. You won’t get lost when searching for a live template to fit your needs. A separate Groovy node is available as well.

Editor

Problems View

Problems tool window

We’ve added the Problems tool window, which displays the warnings and errors related to the current file, along with descriptions of the issues. From this tool window, you can right-click on an issue to navigate to the line of code where the problem was encountered, and you can fix the issues one by one with Alt+Enter.

Editor Inspections Widget

Inspections widget

The Inspections widget simplifies searching for warnings, errors, and other issues, and lets you easily navigate between them by pressing F2 or clicking the arrow icons. From the Inspections widget, you can select which issues you want to highlight: none, errors only, or all problems.

Intentions preview

Intentions preview

To experiment with the possible outcomes of applying intention actions, you can preview their results before you actually apply them to your code. Press Alt+Enter to call Show Context Actions and select the intention action you need and then press Alt+Space on macOS or Ctrl+Shift+I on Windows and Linux to display the results preview.

Improved Spellchecker

The built-in spell checker has been improved: it works much faster, filters out irrelevant suggestions, and ranks valid suggestions based on context. Additionally, the IDE detects the language from the first couple of paragraphs in a file and suggests enabling the corresponding language model.

Version Control

Full GitHub pull requests support

The details of open pull requests are now one click away in a separate vertical tool window. The main editor window shows the conversation, and you can add comments directly. Pre-commit check results are displayed at the bottom of the window. If you have permission to manage pull requests, you can now browse, assign, manage, and merge them, view and submit comments, and accept changes right from inside the IDE.

Check out more details in our blog

Improved Git actions dialogs

For this release, we’ve revised the visual consistency for Merge, Pull, and Rebase dialogs. We’ve also improved the dialogs so that they clearly identify what Git commands will be executed, and included some missing options. We’ve also added --rebase and --no-verify to the Pull and Merge dialogs, respectively.

Improved result display of the Compare branches action

Improved result display for the Compare Branches action

When you compare two branches in IntelliJ IDEA 2020.2, the IDE shows their commits in one view by opening their logs in the editor. In contrast to the VCS tool window, this view has enough space for a full report on what commits are in each branch and which files are affected.

Squash local commits from the log

Squash and drop local commits from the log

You can now select multiple commits from a local branch and squash them. In the Git tool window, open the Log tab, select local commits, and choose Squash Commits. If you decide to change the commit message, all the changes in those commits will be put into one single commit together with the updated message. In addition, you can now drop commits from the Git log.

Support for Git installed in WSL2

IntelliJ IDEA 2020.2 allows you to use Git installed in WSL2 when you work with projects from Linux or Windows file systems. Once you open a project from WSL, the IDE automatically switches to Git in WSL and lets you use all the related features.

Frameworks & Technologies

Jakarta EE 9 support Ultimate

We are ready for the Jakarta EE 9 release in September, and we already support all the features that are available for Jakarta EE, including CDI, JPA, Batch, Bean Validation, JSF, JAX-RS, WebSocket, Servlets, JSP, JSON-P, JSON-B, Security, and EJB and JTA specifications.

Jakarta EE Wizard

Java Enterprise project wizard Ultimate

If you need to create a Java EE 8 or Jakarta EE 9 project, you can now do it using our New Project wizard. A new Jakarta EE project is just steps away. Set it up by selecting the Java version, build tool, extensions, and other options.

Quarkus config files support: .properties and YAML Ultimate

To make it easier for you to work with Quarkus configuration files, the IDE now provides code completion and highlighting, and it colors unused code gray for both .properties and YAML configuration files. Additionally, you can jump right from the configuration files to the configured beans and back.

Better Quarkus CDI support Ultimate

With the current version of the IDE, you can use gutter navigation for injected beans and updated inspections that work perfectly with the Quarkus simplified syntax. Additionally, IntelliJ IDEA 2020.2 supports @DefaultBean, @AlternativePriority annotations, and injection by qualifier only (no need to use @Inject).

wagger UI support

Swagger UI support Ultimate

With the newly added Swagger UI integration, it is now possible to preview your OpenAPI in a built-in panel in the IntelliJ IDEA editor. This is a great update for simplifying testing.

Jakarta EE Wizard

Swagger Diff Ultimate

The IDE has been improved so that it can calculate a structural diff between OpenAPI specifications. Knowing the Swagger/OpenAPI specifics, IntelliJ IDEA 2020.2 compares JSON or YAML files based on their structure, and you can preview the detected diff. To do so, choose Compare Open API Specifications from the context menu or invoke this action from the Search Everywhere dialog.

Jakarta EE Wizard

Project generation for Micronaut Ultimate

Here is another useful update for the New Project wizard and the Micronaut framework. We’ve added the possibility to create new Micronaut projects directly from the wizard. Configure the project step-by-step and start working with it in no time.

Message Queue support for Micronaut and Amazon SQS API Ultimate

If your Micronaut application uses asynchronous communication via RabbitMQ or Kafka, this update is for you. Navigate message queues and topics using gutter icons, find usages, and name completion. You can benefit from the same set of features for the Amazon SQS API.

JAX-RS and MicroProfile REST Client HTTP Requests Generation

JAX-RS and MicroProfile REST Client HTTP Requests Generation Ultimate

For easy creation and testing of HTTP requests, IntelliJ IDEA will automatically generate JAX-RS and MicroProfile HTTP requests and then open them in the built-in REST Client. You can even use intention actions to generate HTTP requests on any URL if your project uses one of the enterprise frameworks: Spring, JAX-RS, Retrofit, OkHttp, or Micronaut.

URL code completion for REST Assured tests

URL code completion for REST Assured tests Ultimate

We’ve updated REST Assured tests with code completion for URL path references and navigation to the related resources.

Selenium plugin adds integration with Selenoid Ultimate

The Selenium plugin now integrates with Selenoid and provides an easy way to run a new test environment right from the browsers.json file. All required browser images will be pulled automatically when the Selenoid container starts.

Profiler

HPROF memory viewer

HPROF memory viewer Ultimate

Improved viewer mechanics help you analyze the heap, pointing out parts of the code that use large amounts of memory, and detect the causes of memory leaks. The HPROF memory viewer displays the calculated retained sizes of objects, the shortest paths to garbage collector roots, the dominator tree for objects (retained objects), and incoming references.

User Experience

Faster indexing with pre-built shared indexes

You can now speed up indexing by downloading indexes generated on another machine instead of building them locally. Use pre-built shared indexes for JDKs, or generate and distribute custom shared indexes to a target IDE build. Simply install the Shared Indexes plugin. Learn more.

Highlighting and completion during indexing

New possibilities during indexing

While IntelliJ IDEA 2020.2 is indexing your project, you can now continue writing code. The IDE now offers code completion suggestions for Java and PHP during indexing.

Terminal

Possibility to run IDE features from the Terminal

Option to run IDE features from the Terminal

It is now possible to call IDE features right from the Terminal. With IntelliJ IDEA 2020.2, you can run highlighted commands in their corresponding GUI using the Ctrl + Enter / Cmd + Enter shortcut. If you want to run the highlighted commands in debug mode, use Ctrl + Shift + Enter / Cmd + Shift + Enter.

You can learn more about this feature in our blog post.

Build tools

Maven Wrapper support

IntelliJ IDEA 2020.2 now supports the Maven Wrapper, which automatically installs the necessary version of Maven into your project. If the Maven Wrapper is present and configured, the IDE automatically uses it and imports changes when they are required.

Maven versioning per project

You can now set a Maven version for each project instead of using the previous approach, which used the same version of Maven for all open projects.

Build tool output presentation

To provide a more consistent user experience, we are now displaying the build output of IntelliJ IDEA’s native builder in the Build tool window instead of in the Messages tool window.

Better code insight in build.gradle files

IntelliJ IDEA 2020.2 provides project name completion and navigation for project names in build.gradle files.

Javascript TypeScript 'ej

New smart intentions and inspections

New intention actions for better productivity Ultimate

You can now quickly convert a for loop with a numeric index into a forEach array method. Reading documentation comments in JavaScript and TypeScript files has also become easier, as you can now render them right in the editor to minimize distractions.

Vuex and Composition API support

Prettier as a default formatter Ultimate

Starting with this release, it is now easier to set Prettier as the default formatter for tidying up your code. Just enable the On code reformat checkbox in settings, and the IDE will use Prettier whenever you reformat your .js, .ts, .jsx, and .tsx files. If necessary, you can add other file types too.

Java Live Templates Clean-up

Nuxt.js support Ultimate

We’ve added Nuxt.js support and Vue-specific code-style settings – great news if you work with the Vue.js framework.

Database

Separate editor for cell values

Separate editor for cell values Ultimate

This release introduces some valuable tools for cases where you have a long value in a cell. Starting with this release, you can view and edit long values in a separate panel. The editor panel has a soft-wrap mode that can be toggled in the right-hand toolbar.

New UI for boolean values

New UI for boolean values Ultimate

It is now easier to observe and edit boolean values, which are now shown as raw values instead of as checkboxes. You can type f, t, d, n, g, or c to enter the corresponding values of false, true, default, null, generated, and computed. If you type anything else, you’ll get a drop-down list with possible values.

DML preview in the data editor

DML preview in the data editor Ultimate

You can now preview a query with your changes in the data editor. To do so, click the DML button that becomes active if there are changes pending.

Scala 3 support

Google BigQuery dialect Ultimate

We’ve added partial support for Google BigQuery. The IDE correctly highlights queries and offers coding assistance for them.

Scala

Auto-import for Implicits

Auto-import for Implicits

While you can use View | Show Implicit Hints to display implicits (even absent ones), importing an implicit was never an easy task.

The new Auto-import for implicits action works exactly like Auto-import for unresolved references. The automatic popup makes the feature more discoverable, but it’s also possible to disable the auto-popup and invoke the Import… quick-fix with Alt + Enter (more info).

Auto-import for Implicits

Indentation-based brace handling

Adding and removing braces is an integral part of Scala programmers’ everyday life. To make the task easier, we first added an intention to wrap and unwrap expressions, but it had to be invoked manually. Then we supported adding and removing complementary braces automatically.

Now we can do even better – both braces are added and removed automatically and on the fly based on code indents. In this way, you can try significant indentation while still keeping the braces, even in Scala 2. To take advantage of this feature, just don't think about the braces and let the IDE do the work.

First-class companions

In Scala, a companion class or trait and the companion object have a special relationship. We have long reflected this in Project View, but otherwise we used to treat companions as any other classes or objects.

Now we show navigable gutter icons for companions (configurable in Settings | General | Editor | Gutter Icons). You can also navigate to a companion by using Go To on a class, trait, or object keyword. Companion object members can now easily be auto-completed or auto-imported.

In-editor Scaladoc rendering

In-editor Scaladoc rendering

Scaladoc markup is easy to edit, but it’s not so easy to view – you have to wade through * columns, tags, and macros. Now we can render Scaladoc right in the editor, so it looks crisp and concise (you can toggle rendering in Editor | General | Appearance).

We've also improved Scaladoc rendering in the Quick Documentation popup – it can now properly handle paragraphs, lists, and macros.

Completion Improvements

In addition to improving the accuracy and speed of code completion, we've introduced two distinctive new capabilities. First, you can now autocomplete both the method’s name and its arguments in a single step, as long as appropriate values are present in the current scope.

Second, you can now apply a "static" function to an argument using the dot notation, which can be used in conjunction with algebraic data types (ADTs). This functionality is a part of Hoogle Completion – our attempt to re-imagine Hoogle in a language that doesn't use Hindley-Milner type system (work in progress).

Docker

Connect to Docker securely

Connect to Docker securely

IntelliJ IDEA 2020.2 allows you to securely connect to Docker on Windows, as we have added support for TLS connections to the Docker daemon from IntelliJ IDEA.

Kubernetes

Multiple configuration files

Multiple configuration files Ultimate

You can now specify a custom kubeconfig file in Preferences / Settings | Build, Execution, Deployment | Kubernetes. Alternatively, click the Show Settings… button in the Services view when selecting a Kubernetes root item. You can also specify a custom kubeconfig file either globally or for a current project. In other words, you can have a separate kubeconfig file for each of your projects.

ConfigMap and Secret support

ConfigMap and Secret support Ultimate

We’ve added completion for ConfigMaps/Secrets from the current project and from the cluster. Items from the cluster are marked in blue in the completion list. You can now navigate from a usage of ConfigMap/Secret to the corresponding ConfigMap/Secret resource in the project or cluster. The same goes for ConfigMap/Secret keys.

Other

  • IntelliJ IDEA 2020.2 includes all the changes from Android Studio 4.0. Learn more now.
  • IntelliJ IDEA can detect if you are using a screen-reader, and if so, it will automatically enable the IDE’s accessibility features.
  • IntelliJ IDEA 2020.2 lets you use Unicode emoji characters on Linux. Get ready to blast off. 🚀
  • To avoid performance and rendering issues, we now offer a new integration with JCEF to run IntelliJ Platform plugins.