The pattern() method of Matcher Class is used to get the pattern to be matched by this matcher.
Syntax:
public Pattern pattern()
Parameters: This method do not accepts any parameter.
Return Value: This method returns a Pattern which is the pattern to be matched by this Matcher.
Below examples illustrate the Matcher.pattern() method:
Example 1:
// Java code to illustrate pattern() 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"; // Create a matcher for the input String Matcher matcher = pattern.matcher(stringToBeMatched); // Get the Pattern using pattern() method System.out.println("Pattern: " + matcher.pattern()); }} |
Output:
Pattern: Geeks
Example 2:
// Java code to illustrate pattern() 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 = "GFGFGFGFGFGFGFGFGFG"; // Create a matcher for the input String Matcher matcher = pattern.matcher(stringToBeMatched); // Get the Pattern using pattern() method System.out.println("Pattern: " + matcher.pattern()); }} |
Output:
Pattern: GFG
Reference: Oracle Doc