Multiple choice technology programming languages Which of the following are Java keywords. extern volatile transient this Reveal answer Fill a bubble to check yourself B,C,D Correct answer Explanation Java keywords are reserved words with special meaning. 'volatile' is used for variables in multithreading, 'transient' marks fields not to be serialized, and 'this' refers to the current instance. 'extern' is a C/C++ keyword, not used in Java.