What does public int end(int group) return?
A. offset from last character of the subsequent group
B. offset from first character of the subsequent group
C. offset from last character matched
D. offset from first character matched
Answer: Option A
What is a regular expression in Java?
A. A pattern that describes a set of strings
B. A Java class for reading regular expressions
C. A Java method for creating strings
D. A Java package for file operations
Which class is used to compile a regular expression in Java?
A. `String`
B. `Regex`
C. `Matcher`
D. `Pattern`
In a regular expression, what does the metacharacter `.` represent?
A. A digit
B. A space
C. Any character
D. A word
What does the character class `[A-Za-z]` match in a regular expression?
A. Any special character
B. Any uppercase or lowercase letter
C. Any whitespace character
D. None of These
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