Which of the following is a valid java keyword?

static

Reason — In Java, keywords are reserved words that have a specific meaning and purpose in the language. Keywords must always be written in lowercase. Analysing the given options:

1. If: Incorrect because Java keywords are case-sensitive, and the correct keyword is if (in lowercase).
2. BOOLEAN: Incorrect because the keyword in Java is boolean (in lowercase).
3. static: Correct. static is a valid Java keyword used to declare static methods, variables, or blocks.
4. Switch: Incorrect because the correct keyword is switch (in lowercase).