1bc93e3d0f
This commit introduces the following changes. 1) It adds a new Spring @NonNull annotation which allows to apply @NonNullApi semantic on a specific element, like @Nullable does. Combined with @Nullable, it allows partial null-safety support when package granularity is too broad. 2) @Nullable and @NonNull can apply to ElementType.TYPE_USE in order to be used on generic type arguments (SPR-15942). 3) Annotations does not apply to ElementType.TYPE_PARAMETER anymore since it is not supported yet (applicability for such use case is controversial and need to be discussed). 4) @NonNullApi does not apply to ElementType.FIELD anymore since in a lot of use cases (private, protected) it is not part for the public API + its usage should remain opt-in. A dedicated @NonNullFields annotation has been added in order to set fields default to non-nullable. 5) Updated Javadoc and reference documentation. Issue: SPR-15756
Spring Framework
The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications -- on any kind of deployment platform. A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.
The framework also serves as the foundation for Spring Integration, Spring Batch and the rest of the Spring family of projects. Browse the repositories under the Spring organization on GitHub for a full list.
Code of Conduct
This project adheres to the Contributor Covenant code of conduct. By participating, you are expected to uphold this code. Please report unacceptable behavior to spring-code-of-conduct@pivotal.io.
Downloading Artifacts
See downloading Spring artifacts for Maven repository information. Unable to use Maven or other transitive dependency management tools? See building a distribution with dependencies.
Documentation
See the current Javadoc and reference docs.
Getting Support
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Building from Source
The Spring Framework uses a Gradle-based build system. In the instructions
below, ./gradlew is invoked from the root of the source tree and serves as
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Prerequisites
Git and JDK 8 update 20 or later
Be sure that your JAVA_HOME environment variable points to the jdk1.8.0 folder
extracted from the JDK download.
Check out sources
git clone git@github.com:spring-projects/spring-framework.git
Import sources into your IDE
Run ./import-into-eclipse.sh or read import-into-idea.md as appropriate.
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Install all spring-* jars into your local Maven cache
./gradlew install
Compile and test; build all jars, distribution zips, and docs
./gradlew build
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License
The Spring Framework is released under version 2.0 of the Apache License.