Which one of the following statements regarding Java identifiers is  NOT correct?Group of answer choicesJava predefined keywords cannot be used as identifiers.Can have letters, digits and underscore charters.Can be of any length.Are case sensitive.Can start with a digit.

Which of the following is a valid identifier in Java?Options_identifier123identifier#identifieridentifier-123

Which of the following is a valid identifier in Java? a. 123identifier b. _identifier c. #identifier d. identifier-123

Select the correct answerWhich of these can not be used for a variable name in Java?Optionskeywordidentifieridentifier & keywordnone of the mentioned

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 statements is VALID?Group of answer choicesArrayList<? > l = new ArrayList<? extends Number >( );ArrayList<? > l = new ArrayList<?>( );ArrayList<? extends Number> l = new ArrayList<String>( );ArrayList<? super String> l = new ArrayList<Object>( );