The choice of programming language depends on the type of freelance work you want to do. Both C++ and Java are popular languages, but they have different strengths and are suited to different types of projects.
C++ is a compiled language and is often used for system-level programming, such as operating systems, device drivers, and embedded systems. It is also used in game development and high-performance computing. C++ is a complex language and can be difficult to learn, but it offers great performance and control.
Java, on the other hand, is an interpreted language that is often used for web development, server-side applications, and mobile app development. Java has a large ecosystem of libraries and frameworks, which makes it easy to build complex applications quickly. Java is also easier to learn than C++, but it may not offer the same level of control or performance.
In terms of the long run, both languages are likely to remain relevant for years to come, but Java may have a slight edge due to its widespread use in enterprise applications. However, it's important to note that the software development industry is constantly evolving, and new languages and technologies may emerge in the future.
Ultimately, the best language for freelance work depends on your specific interests and the type of projects you want to work on. It's worth researching job postings and market trends to see which languages are in demand for freelance work in your area.