Matcher hasTransparentBounds() method in Java with Examples

The hasTransparentBounds() method of Matcher Class is used to check if this matcher has transparent bounds or not. By transparent bounds, it means that the matcher will be matched for the matching pattern beyond the region boundaries for getting a match, if the transparent bounds are set to true. This method returns a boolean value stating the same.

Syntax:

public boolean hasTransparentBounds()

Parameters: This method takes no parameters.



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

Below examples illustrate the Matcher.hasTransparentBounds() method:

Example 1:

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// Java code to illustrate hasTransparentBounds() 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 transparent bounds or not
        // using hasTransparentBounds() method
        System.out.println("Does this matcher"
                               + " has transparent bounds: "
                               + matcher
                                     .hasTransparentBounds());
    }
}

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Output:

Does this matcher has transparent bounds: false

Example 2:

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// Java code to illustrate hasTransparentBounds() 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
            = "GFGFGFGFGFGFGFGFGFG FGF GFG GFG FGF";
  
        // Create a matcher for the input String
        Matcher matcher
            = pattern
                  .matcher(stringToBeMatched);
  
        // set the transparent bounds to true
        matcher = matcher
                      .useTransparentBounds(true);
  
        // Check if this matcher
        // has transparent bounds or not
        // using hasTransparentBounds() method
        System.out.println("Does this matcher"
                               + " has transparent bounds: "
                               + matcher
                                     .hasTransparentBounds());
    }
}

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Output:

Does this matcher has transparent bounds: true

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



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