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Pattern quote(String) method in Java with Examples

Last Updated : 13 Feb, 2023

quote(String) method of a Pattern class used to returns a literal pattern String for the specified String passed as parameter to method.This method produces a String equivalent to s that can be used to create a Pattern. Metacharacters or escape sequences in the input sequence will be given no special meaning. If you compile the value returned by the quote method, you'll get a Pattern which matches the literal string that you passed as a parameter to method.\Q and \E mark the beginning and end of the quoted part of the string. Syntax:

public static String quote(String s)

Parameters: This method accepts a single parameter s which represents the string to be literalized. Return value: This method returns a literal string replacement for String s. Below programs illustrate the quote() method: Program 1: 

Output:
found the Regex in text:ee starting index:1 and ending index:3
found the Regex in text:ee starting index:9 and ending index:11

Time Complexity : O(n)

Space Complexity : O(1)

Program 2: 

Output:
match found

Time Complexity : O(n)

Space Complexity : O(1)

Reference: https://docs.oracle.com/javase/10/docs/api/java/util/regex/Pattern.html#quote(java.lang.String)

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