In this example we shall show you how to use Matcher.replaceAll(String replacement) API method to replace every subsequence of an input sequence that matches a specified pattern with a given replacement string. To replace any subsequence of a given sequence with a given String one should perform the following steps:
- Compile a String regular expression to a Pattern, using
compile(String regex)API method of Pattern. - Use
matcher(CharSequence input)API method of Pattern to create a Matcher that will match the given String input against this pattern. - Use
replaceAll(String replacement)API method, with a given String parameter to replace all subsequences of the sequence that matches the pattern with the given String,
as described in the code snippet below.
package com.javacodegeeks.snippets.core;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MatcherReplaceAll {
public static void main(String args[]) {
Pattern pattern = Pattern.compile("(i|I)ce");
//create the candidate String
String str = "I love ice. Ice is my favorite. Ice Ice Ice.";
Matcher m = pattern.matcher(str);
String str2 = m.replaceAll("Java");
System.out.println(str2);
}
}
Output:
I love Java. Java is my favorite. Java Java Java.
This was an example of Matcher.replaceAll(String replacement) API method in Java.
