In fact, learning java from scratch is never terrible. The terrible thing is that there is no determination to fight our way out. If you are really interested in the IT industry and the Java language, then you should encourage yourself more, or you can teach yourself Java through various channels, and you can watch basic videos about the direction of Java through the Internet, but this road will be more difficult.
Because the information on the internet has not been screened and systematically arranged by professionals. For students with zero foundation, it will be very difficult to browse a large amount of information, and there is also the risk of receiving incomplete or wrong knowledge. Because computers pay attention to a kind of logical thinking ability, to put it bluntly, things should be organized and can be extrapolated.
Through self-study, this may take more detours, but if you persist, few people will reach the finish line. As for when to arrive, it depends on the time you spend, the speed of walking, the length of the road and other factors.
So I think it is necessary for students with zero foundation to learn java and participate in professional training.
Of course, first of all, I still have to declare that I am also a trainer. Before you decide to train, I hope you understand a truth: training is just to get you started. Don't bet on training institutions. If you want to go higher and further in this industry, you need to keep learning and upgrading.
Training institutions mainly provide a good learning environment and atmosphere, as well as introductory basic teaching, which meets the technical needs of the market and enterprises, and is more suitable for students with poor self-control ability during self-study exams, as well as those who have not studied well in universities or want to enter this industry.
In short, you can learn java from scratch. These basic things are not difficult technically, so it can be said that they are just things that need to be memorized.
It may be difficult to write your own code at first. Basically, you need to look at other people's code and copy it yourself, otherwise you won't write it. This is how beginners start, so it's normal. This requires writing more and practicing more, accumulating bit by bit, accumulating more knowledge points and being logical. Then you will naturally start writing your own code. This is a question of writing more and practicing more.