Which of the following are legal identifiers in Java?

Java is a programming language often seen in computers or when discussing computers. There are several different computer languages today, but Java is a very popular one. There are differences among the computer programming languages and they include being based on class or being oriented by objects as Java does. The main purpose that Java brags about is that it is simple to learn and use.

Once you write the language for a program, it will automatically run without any problems occurring. Legal identifiers in Java use a certain code called Unicode which includes characters, numbers, and symbols but there are rules including that the identifiers have to begin with letters or characters. Therefore, ABC 1, OneAbc and Swihile would be identifiers.