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Pattern resetting using regular expression
Posted on: August 30, 2008 at 12:00 AM

This Example describes the way to retrieve the String using regular expression. For this we are going to make program named Pattern_Resetting.java.

Pattern resetting using regular expression

This Example describes the way to retrieve the String using regular expression. For this we are going to make program named Pattern_Resetting.java. The steps involved in program Pattern_Resetting.java are described below:-

String regex = "[frb][aiu]":-Defining regression in string form, Here "[] []" determines text and finds parts that match the provided specification.

Pattern pattern = Pattern.compile(regex):-Creating a pattern object and compiling the given regular expression into a given pattern.

String text = "fix the rug ":-Declaring text from where match will be provided.

Matcher matcher = pattern.matcher(text):- Creates a matcher for matching the given input against pattern.

(matcher.find()):- This is the method of matcher class which is used for finding the next subsequence of the input sequence and it usually returns a boolean value.

Pattern_Resetting.java

import java.util.regex.Matcher;

              import java.util.regex.Pattern;

              

              public class Pattern_Resetting {

              

                public static void main(String[] args) throws Exception {

                String regex = "[frb][aiu]";

                Pattern pattern = Pattern.compile(regex);

               

                String text = "fix the rug ";

                

                Matcher matcher = pattern.matcher(text);

                while (matcher.find()) {

               System.out.println(matcher.group());

                }

                matcher.reset("fix the rig with rags");

                while (matcher.find()) {

                System.out.println(matcher.group());

                }

                }

              }

Output of the program:-

fi ru fi ri

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