Matcher toString() method in Java with Examples

The toString() method of Matcher Class is used to get the String representation of this matcher. This method is derived from the Object Class and behaves in the similar way.

Syntax:

public String toString()

Parameters: This method takes no parameters.

Return Value: This method returns a String value which is the String representation of this matcher.

Below examples illustrate the Matcher.toString() method:

Example 1:

// Java code to illustrate toString() 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
            = " Geeks for For Geeks Geek";

        // Create a matcher for the input String
        Matcher matcher
            = pattern.matcher(stringToBeMatched);

        // Get the String representation of this matcher
        // using toString() method
        System.out.println(matcher.toString());
    }
}

Output:

java.util.regex.Matcher[pattern=(Geeks) region=0,25 lastmatch=]

Example 2:

// Java code to illustrate toString() method

import java.util.regex.*;

public class GFG {
    public static void main(String[] args)
    {

        // Get the regex to be checked
        String regex = "(GFG)";

        // 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);

        // Get the String representation of this matcher
        // using toString() method
        System.out.println(matcher.toString());
    }
}

Output:

java.util.regex.Matcher[pattern=(GFG) region=0,15 lastmatch=]

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