Matcher useTransparentBounds(boolean) method in Java with Examples
Last Updated :
27 Nov, 2018
The useTransparentBounds(boolean) method of Matcher Class is used to set the transparent bounds of this matcher. 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 Matcher with the modified transparent bounds.
Syntax:
public boolean useTransparentBounds(
boolean setTransparentBounds)
Parameters: This method takes a parameter setTransparentBounds which is a boolean value depicting the transparent bounds of this matcher to be modified into.
Return Value: This method returns a Matcher with the modified transparent bounds.
Below examples illustrate the Matcher.useTransparentBounds() method:
Example 1:
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
String regex = "(Geeks)";
Pattern pattern
= Pattern.compile(regex);
String stringToBeMatched
= "GeeksForGeeks Geeks for For Geeks Geek";
Matcher matcher
= pattern.matcher(stringToBeMatched);
matcher = matcher
.useTransparentBounds(true);
System.out.println("Does this matcher"
+ " has transparent bounds: "
+ matcher.hasTransparentBounds());
}
}
|
Output:
Does this matcher has transparent bounds: true
Example 2:
import java.util.regex.*;
public class GFG {
public static void main(String[] args)
{
String regex = "(FGF)";
Pattern pattern
= Pattern.compile(regex);
String stringToBeMatched
= "FGF GFG GFG FGF";
Matcher matcher
= pattern.matcher(stringToBeMatched);
matcher = matcher
.useTransparentBounds(false);
System.out.println("Does this matcher"
+ " has transparent bounds: "
+ matcher.hasTransparentBounds());
}
}
|
Output:
Does this matcher has transparent bounds: false
Reference: https://docs.oracle.com/javase/9/docs/api/java/util/regex/Matcher.html#useTransparentBounds-boolean-
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