Both .NET and Java are popular programming languages with a long history and a large developer community. In 2023, it is likely that both .NET and Java will continue to be widely used for a variety of applications. The right choice for you will depend on your specific needs and goals.

Here are some factors to consider when deciding between .NET Vs Java:

Ecosystem: Both .NET and Java have a large and active developer community, with a wide range of libraries and frameworks available. .NET is popular in the Windows ecosystem, while Java is used on a variety of platforms, including Windows, Mac, and Linux.

Language features: Both .NET and Java are object-oriented languages, but they have some differences in their syntax and features. For example, .NET supports functional programming with languages like F#, while Java does not.

Performance: In general, both .NET and Java are fast and efficient, and the performance difference between the two is not significant in most cases.

Career opportunities: Both .NET and Java are popular languages with a strong demand for developers. However, the specific job market and demand for each language can vary depending on your location and the industries in which you are interested.

Ultimately, the right choice for you will depend on your specific needs and goals. It might be helpful to do some research and try out both languages to see which one you prefer.