What’s New in IntelliJ IDEA 2024.1? A Deep Dive into the Latest Features

Key Highlights

Full‑Line Code Completion and Java 22 Support

The Ultimate edition now offers full‑line code completion, providing suggestions for entire statements. It also adds support for JDK 22 features released in March 2024, including unnamed variable and pattern final iteration, string templates, the second preview of implicit class declarations, and super(...) calls in preview mode.

New Terminal (Beta)

A redesigned terminal groups commands into blocks, enables smooth navigation between blocks, offers command completion, and provides easy access to command history.

Sticky Lines in the Editor

Sticky lines keep important structural elements such as class or method headers fixed at the top of the editor while scrolling, ensuring the current scope remains visible and allowing quick navigation by clicking the pinned line.

IDE Features Available During Indexing for Java and Kotlin

Code highlighting, completion, and other core IDE functions are usable while the project index is being built for both Java and Kotlin, improving startup experience. Users can also invoke Go to Class and Go to Symbol before indexing completes.

IDE UI Scaling

The IDE can be scaled to 90%, 80%, or 70% to adjust the size of UI elements to user preference.

Language Injection in String Templates

Developers can inject language fragments into string templates using annotations or the “Inject language or reference” intention (⌥Enter). The IDE suggests appropriate language annotations and allows editing injected fragments in a separate editor pane.

Improved Logging Workflow

Log messages in the console now link directly to the originating code. The IDE suggests adding missing logger instances and streamlines inserting logger statements even when the logger is out of scope.

Redesigned Conflicts Detected Dialog

The dialog now mirrors the editor’s content for clearer conflict resolution, remembers window size adjustments, offers full keyboard navigation, and includes updated buttons to simplify the refactoring workflow.

For more details, see the official release notes at https://www.jetbrains.com/zh-cn/idea/whatsnew/ and the download page at https://www.jetbrains.com/idea/download/.