128-java-generics

Fix unchecked warnings and ClassCastException in Java generics by removing raw types and applying bounded type parameters. This process assesses codebases to enforce type safety, ensuring all changes compile and tests pass for a documented, reusable generics pattern library.

Apply PECS wildcards to rework Java APIs by using Producer extends and Consumer super for flexible yet safe interfaces. This refactoring eliminates unchecked warnings, aligns code with bounded type parameters, and yields maintainable generics APIs across common codebases.

Type erasure removes generic type information at runtime, affecting Java generics compilation by enforcing type safety only at compile time. This skill addresses type erasure implications by running Maven compilation before applying changes to ensure all code passes.

Yes, you can integrate Java generics with Records and sealed types to create expressive, maintainable APIs. This alignment with modern Java features like pattern matching ensures type safety while producing a documented, reusable generics pattern library for production systems.

The best way to eliminate raw types in a production Java codebase is running a multi-step generics refinement process that assesses and fixes generics usage. It requires Maven compilation before applying changes and yields documented, reusable generics patterns with all tests passing.

Use bounded type parameters when a type must be referenced within a method, and wildcards when only consuming or producing values. This skill resolves generics-related issues by applying PECS guidelines and bounded types to improve type safety and maintainability across codebases.