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The java.util.regex.Matcher class represents the engine for executing various matching operations. This class has no constructor, and you can create it using the matchs() method of the class java.util.regex.Pattern/Get an object of this class.
Anchoring bounds are used for area matching, such as ^ and $. By default, the matcher uses anchoring bounds, and you can use the useAnchoringBounds() method to switch from using anchoring bounds to non-anchoring bounds.
This (Matcher) classhasAnchoringBounds()Method verifies whether the current matcher uses anchoring bounds (if so), otherwise returns true, otherwise returns false.
import java.util.regex.Matcher; import java.util.regex.Pattern; public class HasAnchoringBoundsExample { public static void main(String[] args) { String regex = "(.*)(\\d+)(.*); String input = "This is a sample Text" 1234, with numbers in between. + "\nThis is the second line in the text" + "\nThis is third line in the text"; //Creating a pattern object Pattern pattern = Pattern.compile(regex); //Creating a Matcher object Matcher matcher = pattern.matcher(input); //Verifying for anchoring bounds boolean bool = matcher.hasAnchoringBounds(); //checking for the match if(bool) { System.out.println("Current matcher uses anchoring bounds"); } else { System.out.println("Current matcher uses non-anchoring bounds)); } if(matcher.matches()) { System.out.println("Match found"); } else { System.out.println("Match not found"); } } }
Output result
Current matcher uses anchoring bounds Match not found
import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Trail { public static void main(String args[]) { //Reading string value Scanner sc = new Scanner(System.in); System.out.println("Enter input string"); String input = sc.nextLine(); //Regular expression to find digits String regex = "."*\\d+.*"; //Compiling the regular expression Pattern pattern = Pattern.compile(regex); //Printing the regular expression System.out.println("Compiled regular expression: "+pattern.toString()); //Retrieving the matcher object Matcher matcher = pattern.matcher(input); matcher.useAnchoringBounds(false); boolean hasBounds = matcher.hasAnchoringBounds(); if(hasBounds) { System.out.println("Current matcher uses anchoring bounds"); } else { System.out.println("Current matcher uses non-anchoring bounds)); } //verifying whether match occurred if(matcher.matches()) { System.out.println("Given String contains digits"); } else { System.out.println("Given String does not contain digits"); } } }
Output result
Enter input string hello sample 2 Compiled regular expression: .*\d+.* Current matcher uses non-anchoring bounds Given String contains digits