Java doesn’t allow implicit variance for generic types, because doing so would threaten type safety. The wildcard is a compromise, allowing (implicit) unspecified covariance.

Universal generics would allow Java type variables to range over primitive and reference types, making it easier to extend or reuse code across different types.

The project's goals include a major overhaul of Java's generics, a new approach to generic typing, and new support for value types.

"generics over numerical types with efficient maths" is one of the real hard problems with the generics systems in many popular languages (c#/dotnet and java included, though java's type erasure ...

Even as of early 2015, Java 8 is still fresh and new with something intriguing to offer developers. But Java 9 isn't that far off. Both versions are likely to change how the language works in pretty ...

The project's goals include a major overhaul of Java's generics, a new approach to generic typing, and new support for value types.