James Gosling began the development of Java at Sun Microsystems (later acquired by Oracle) as an alternative to the C++ programming language, with its first public implementation in 1995. Though the first few versions of C# shared many similarities with C++ and Java, later releases helped distinguish C# as a unique language capable of facilitating object-oriented and functional programming.Īlthough C# was originally closed-source and exclusive to development in the Microsoft ecosystem, new features and open-source tools were added to support cross-platform development.

Version 2.0 also introduced other major features such as partial types, anonymous methods, nullable value types, covariance, and contravariance. In 2005, version 2.0 of C# introduced features generics and iterators to catch up to Java. Like Java, C# was based on the C and C++ programming languages, referenced by its original name, “C.O.O.L.,” or “C-like Object Oriented Language,” but was designed with business and enterprise needs in mind.

C# was first developed in 2000 as a direct competitor to Java by Anders Hejlsberg and his team at Microsoft.

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