What does public int start() return?
A. returns start index of the input string
B. returns start index of the current match
C. returns start index of the previous match
D. none of the mentioned
Answer: Option C
This Question Belongs to Java Program >> Regular Expressions In Java
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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