Package org.springframework.lang

@NullMarked package org.springframework.lang

Common annotations with language-level semantics: nullability as well as JDK API indications. These annotations sit at the lowest level of Spring's package dependency arrangement, even lower than org.springframework.util, with no Spring-specific concepts implied.

Used descriptively within the framework codebase. Can be validated by build-time tools (for example, FindBugs or Animal Sniffer), alternative JVM languages (for example, Kotlin), as well as IDEs (for example, IntelliJ IDEA or Eclipse with corresponding project setup).

Annotation Interfaces

Class	Description
CheckReturnValue	Specifies that the method return value must be used.
Contract	Specifies some aspects of the method behavior depending on the arguments.
NonNull	Deprecated. since 7.0; use NonNull instead
NonNullApi	Deprecated. since 7.0; use NullMarked instead
NonNullFields	Deprecated. since 7.0; use NullMarked instead
Nullable	Deprecated. since 7.0; use Nullable instead