NoReservedWords

Misconception:

Anything that starts with a letter and consists of just letters and digits can be used as an identifier (name of a variable, method, or class).

Every sequence of letters and digits starting with a letter can be used as an identifier

Some character sequences are reserved for use as keywords and cannot be used as identifiers

Java has some keywords (e.g., new, return, if, int) and some literals (true, false, and null) that are reserved and cannot be used by a programmer as identifiers. That means it is not possible to use these words to name variables, methods, or classes.

Java

H: Using keywords as method or variable names
Repository mining study (BlueJ Blackbox)
250000+ students across the world

Java

8: Using keywords as method or variable names
Qualitative (survey of instructors and students)
Unknown number of undergraduate students, professors, SIGCSE members

Java