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The java.util.regex.Matcher class represents an engine for executing various matching operations. This class has no constructor and can be created using the matchs() method of the java.util.regex.Pattern class/Get an object of this class.
This class (Matcher) of theregion()The method accepts two integer values representing the positions in the input string and sets the current matcher's region.
import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegionExample {}} public static void main(String[] args) { //Regular expression to accepts 6 to 10 characters String regex = "\\A(?=\\w{6,10}\\z)"; System.out.println("Enter 5 to 12 characters: "); String input = new Scanner(System.in).next(); //Creating a pattern object Pattern pattern = Pattern.compile(regex); //Creating a Matcher object Matcher matcher = pattern.matcher(input); //Setting region to the input string matcher.region(0, 4); //Switching to transparent bounds if(matcher.find()) { System.out.println("Match found"); } else { System.out.println("Match not found"); } } }
Output result
Enter 5 to 12 characters: sampleText Match not found
import java.util.regex.Matcher; import java.util.regex.Pattern; public class RegionExample {}} public static void main(String[] args) { String regex = "(.*)(\\d+)(.*)"; String input = "This is a sample Text, 1234, with numbers in between."; //Creating a pattern object Pattern pattern = Pattern.compile(regex); //Creating a Matcher object Matcher matcher = pattern.matcher(input); //Setting the region of the matcher matcher.region(0, 20); if(matcher.matches()) { System.out.println("Match found"); } else { System.out.println("Match not found"); } } }
Output result
Match not found