Java is used for a wide range of things, from making Android apps to making software for large businesses. It's portable and used by a lot of people, which makes it popular and pays well.
Python is widely used in web development, data analysis, machine learning, and automation. It has a high earning potential due to its adaptability and demand in disciplines such as data science and artificial intelligence.
Building scalable and high-performance apps uses Scala extensively. It is especially well-liked in the big data and distributed systems fields, which might result in greater compensation.
Swift is Apple's programming language for iOS and macOS app development. The demand for skilled Swift developers in the mobile app industry can result in competitive pay.
Kotlin is another language used for Android app development that has modern features and better syntax than Java. Its popularity is expanding, which could lead to high earnings.
Rust is popular for its memory safety and efficiency, making it ideal for system programming. It's gaining popularity in fields such as game creation and low-level system work.
Go is known for its simplicity and efficiency, making it a popular choice for building scalable and concurrent applications. Its usage in cloud computing and microservices can lead to well-paying jobs.
For using databases, SQL (Structured Query Language) is required. SQL experts are highly sought after for positions in database management, data analysis, and backend programming.