MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write only the correct answers.)
What is the method to check whether a character is a letter or digit?
Topic: Character class methods
Previous-year question practice database
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
Exam answer
(c) isLetterOrDigit(char).
Explanation
Two things are tested. The method name must be exactly isLetterOrDigit — Java is case-sensitive, so option (d) fails. And it must be given the character to examine, so option (b) with empty brackets fails. Option (a) tests only for a digit. The full call is Character.isLetterOrDigit(ch).
In words
isLetterOrDigit(char).
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