Java Matcher useTransparentBounds() Method

The useTransparentBounds(boolean b) method of Matcher class is used to set the transparency of the region bounds for this matcher. If the parameter is true then it will set this matcher to use transparent bounds otherwise the opaque bounds will be used. By default, a matcher uses opaque bounds.

Syntax

Parameters

b - a boolean indicating whether to use opaque or transparent regions

Returns

this matcher

Since

1.5

Example 1

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MatcheruseTransparentBoundsExample1{

	   public static void main(String[] args) {
	      Pattern p = Pattern.compile("^<abc>");
	      Matcher m = p.matcher("<abc><xyz>"); 
	      m.useTransparentBounds(true);
	      System.out.println(m.hasTransparentBounds());
	   }
}

Test it Now

Output of the above program:

true

Example 2

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MatcheruseTransparentBoundsExample2 {

	   public static void main(String[] args) {
	      Pattern p = Pattern.compile("^<abc>");
	      Matcher m = p.matcher("<abc><xyz><abc>"); 
	      m.useTransparentBounds(true);
	      System.out.println(m.hasTransparentBounds());
	  while(m.find())
	  {
		  System.out.println("  "+m);
	  }
	 }
}

Test it Now

Output of the above program:

true
  java.util.regex.Matcher[pattern=^<abc> region=0,15 lastmatch=<abc>]

Example 3

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MatcheruseTransparentBoundsExample3 {
   public static void main(String[] args) {
	      Pattern p = Pattern.compile("<abc>*");
	      Matcher m = p.matcher("<abc><xyz><abc>"); 
	      m.useTransparentBounds(false);
	      System.out.println(m.hasTransparentBounds());
	  while(m.find())
	  {
		  System.out.println("  "+m);
	  }
	 }
}

Test it Now

Output of the above program:

true
  java.util.regex.Matcher[pattern=<abc>* region=0,15 lastmatch=<abc>]
  java.util.regex.Matcher[pattern=<abc>* region=0,15 lastmatch=<abc>]

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Java Matcher class

Java Matcher useTransparentBounds() Method

Syntax

Parameters

Returns

Since

Example 1

Example 2

Example 3

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