What are unique names used to identify variables in Java called?*

Name three rules that needs to be used when declaring variables in java language

Which of the following is not a valid Java variable name?*1 pointmy_variableMyVariablemyVariable1variable

According to Java naming convention we discussed in class, which of the following identifiers indicate variables?  1) FindArea 2) findArea 3) totalLength 4) TOTAL_LENGTH 5) stringGroup of answer choices1, 21, 42, 32, 3, 5

Which of the following is a valid Java variable name?Question 5Answera._variableb.123variablec.variable#d. $variable

What are the variables prefixed with two underscores (_ _)(_ _) in classes called?