What is the function of the regular expression replaceAll() method?

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The regular expression replaceAll() methodWhat function does it have?

The following author describes the function introduction of the replaceAll() method, as follows:

 The function of the replaceAll() method: Use regular replacement to replace all the matched strings Syntax of the replaceAll() method: Pattern pattern = Pattern.compile("Regular"); //Generate regular expression Matcher matcher = pattern.matcher("regular 122 regular 88988"); //match character matcher.replaceAll("Java")); //replace character

Example:

package com.java265.other;import java.util.regex.Matcher;import java.util.regex.Pattern;public class testClass {/** Use of java265.com Pattern class*/public static void main(String[] args) {Pattern p = Pattern.compile("([a-z]+)");Matcher m1 = p.matcher("java265.com888888");Matcher m2 = p.matcher("java67");System.out.println(m1.replaceAll("Niu Niu"));System.out.println(m1.replaceAll("Niu Niu"));}}-----Run the above code, the following information will be output----Niuniu 265. Niuniu 888888Niu Niu 265. Niu Niu 888888