Do I have to go to a java training class to learn java?

Things are not so absolute. As an old programming language, JAVA has the characteristics of simplicity and robustness. Java looks a lot like C++, but in order to make the language small and familiar, designers have removed many available features in C++ language, which are rarely used by ordinary programmers. Java also eliminates the operator overloading and multi-inheritance characteristics of C++, does not use the main file, and omits the preprocessor. Because Java has no structure, arrays and strings are objects, so pointers are not needed. Java can automatically handle object references and indirect references, and realize the automatic collection of useless units, so that users don't have to worry about storage management and can spend more time and energy on research and development. So java is relatively easy to get started.

However, it does not mean that it is easy to learn by self-study. For beginners, java involves a lot of professional knowledge, which may be difficult for beginners to understand and easy to lose the direction of learning. Moreover, for students with poor self-control and self-discipline, it may be quite difficult to learn, and ultimately it is difficult to meet the entry requirements, wasting time and energy.

It is also feasible to find a training class at this time. With the help of teachers, learning may be more convenient, problems can be solved in time, and more importantly, valuable project experience can be gained.

However, whether you enroll in classes or study by yourself, you can't do without your own efforts.