regex
Matcher replaceAll example
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.