For a lot of its lifetime C# has been ahead of Java, though I think as C# has matured Java has probably caught up so it may be true now. But C# introduced e.g.

For a lot of its lifetime C# has been ahead of Java, though I think as C# has matured Java has probably caught up so it may be true now. But C# introduced e.g. runtime generics, functional style LINQ, async and also RX style programming first, though RX is not part of the language but the ecosystem.