It is always your choice that determines your future. Others can't give you an accurate answer. You can only give some reference and suggestions to relevant parties through your own experience and understanding. However, from the current situation, big data is relatively more popular and more valued by everyone. This can be seen from the convening of the number Expo and the strategic upgrading of the 13 th Five-Year Plan, but it still depends on your own choice!
Java is widely used now, and many enterprises are using Java programming technology to make websites and some software systems. In this regard, big data may be a little worse. After all, there are some differences in the direction they are engaged in.
And now many people have to master a programming language before learning big data, and java programming technology is also widely used. You can basically find this in the big data courses of many training institutions. Basically, the foundation of big data courses at the beginning started with java technology.
Therefore, whether to choose java or big data learning is best to choose according to your actual situation. No matter which technology you choose, as long as you can learn it well, you can have a good development.