- Purpose and Features
- Package-info.java is a Java file for package-level documentation and annotations
- Replaced package.html as preferred documentation format in Java 5
- Serves as home for package-level annotations and documentation
- Documentation Functionality
- Generates Javadoc comments for package documentation
- Provides alternative to HTML documentation format
- Allows for easy integration with other Java source files
- Annotation Usage
- Enables default non-null behavior for fields and parameters
- Supports various package-level annotations like @NonNullApi
- Can be used for declaring nullable fields and return values
- Implementation
- Can be created manually or through IDE tools
- Available through IntelliJ IDEA's New->package-info.java option
- Can be included in project coding guidelines using tools like Sonar