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Matcher hasAnchoringBounds() method in Java with Examples

  • Last Updated : 27 Nov, 2018

The hasAnchoringBounds() method of Matcher Class is used to check if this matcher has anchoring bounds or not. By anchoring bounds, it means that the matcher will be matched for the anchors like ^ and $ for getting a match, if the anchoring bounds are set to true. This method returns a boolean value stating the same.

Syntax:

public boolean hasAnchoringBounds()

Parameters: This method takes no parameters.

Return Value: This method returns a boolean value stating whether this matcher has anchoring bounds or not

Below examples illustrate the Matcher.hasAnchoringBounds() method:



Example 1:




// Java code to illustrate hasAnchoringBounds() method
  
import java.util.regex.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Get the regex to be checked
        String regex = "(Geeks)";
  
        // Create a pattern from regex
        Pattern pattern
            = Pattern.compile(regex);
  
        // Get the String to be matched
        String stringToBeMatched
            = "GeeksForGeeks Geeks for For Geeks Geek";
  
        // Create a matcher for the input String
        Matcher matcher
            = pattern.matcher(stringToBeMatched);
  
        // Check if this matcher has anchoring bounds or not
        // using hasAnchoringBounds() method
        System.out.println("Does this matcher"
                           + " has anchoring bounds: "
                           + matcher.hasAnchoringBounds());
    }
}
Output:
Does this matcher has anchoring bounds: true

Example 2:




// Java code to illustrate hasAnchoringBounds() method
  
import java.util.regex.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // Get the regex to be checked
        String regex = "(F*F)";
  
        // Create a pattern from regex
        Pattern pattern = Pattern.compile(regex);
  
        // Get the String to be matched
        String stringToBeMatched
            = " FGF GFG GFG FGF";
  
        // Create a matcher for the input String
        Matcher matcher
            = pattern.matcher(stringToBeMatched);
  
        // set the anchoring bounds to true
        matcher = matcher
                      .useAnchoringBounds(false);
  
        // Check if this matcher has anchoring bounds or not
        // using hasAnchoringBounds() method
        System.out.println("Does this matcher"
                           + " has anchoring bounds: "
                           + matcher.hasAnchoringBounds());
    }
}
Output:
Does this matcher has anchoring bounds: false

Reference: https://docs.oracle.com/javase/9/docs/api/java/util/regex/Matcher.html#hasAnchoringBounds–

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