Working with Back References : Replace « Regular Expressions « Java

Working with Back References

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
  public static void main(String args[]) {
    String regex = "(\\w)(\\d)(\\w+)";

    Pattern pattern = Pattern.compile(regex);

    String candidate = "X99 ";

    Matcher matcher = pattern.matcher(candidate);

    String tmp = matcher.replaceAll("$33");

    System.out.println("REPLACEMENT: " + tmp);
    System.out.println("ORIGINAL: " + candidate);


Related examples in the same category

1.REGEX = "a*b"
2.Escaping Special Characters in a Pattern
3.Removing Line Termination Characters from a String
4.Append Replacement Method
5.ReplaceAll Method from Matcher
6.replaceFirst Method from Matcher
7.Regular Expression search and replace program