diff --git a/core-java-modules/core-java-string-algorithms-3/src/main/java/com/baeldung/emailvalidation/EmailValidation.java b/core-java-modules/core-java-string-algorithms-3/src/main/java/com/baeldung/emailvalidation/EmailValidation.java
index 97d1b90ff3..4d68ea9c55 100644
--- a/core-java-modules/core-java-string-algorithms-3/src/main/java/com/baeldung/emailvalidation/EmailValidation.java
+++ b/core-java-modules/core-java-string-algorithms-3/src/main/java/com/baeldung/emailvalidation/EmailValidation.java
@@ -4,61 +4,9 @@ import java.util.regex.Pattern;
 
 public class EmailValidation {
 
-    private static String regexPattern;
-
-    public static boolean usingSimpleRegex(String emailAddress) {
-        regexPattern = "^(.+)@(\\S+)$";
-
+    public static boolean patternMatcher(String emailAddress, String regexPattern) {
         return Pattern.compile(regexPattern)
             .matcher(emailAddress)
             .matches();
     }
-
-    public static boolean usingStrictRegex(String emailAddress) {
-        regexPattern = "^(?=.{1,64}@)[A-Za-z0-9_-]+(\\.[A-Za-z0-9_-]+)*@" + "[^-][A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*(\\.[A-Za-z]{2,})$";
-
-        return Pattern.compile(regexPattern)
-            .matcher(emailAddress)
-            .matches();
-    }
-
-    public static boolean usingUnicodeRegex(String emailAddress) {
-        regexPattern = "^(?=.{1,64}@)[\\p{L}0-9_-]+(\\.[\\p{L}0-9_-]+)*@" + "[^-][\\p{L}0-9-]+(\\.[\\p{L}0-9-]+)*(\\.[\\p{L}]{2,})$";
-
-        return Pattern.compile(regexPattern)
-            .matcher(emailAddress)
-            .matches();
-    }
-
-    public static boolean usingRFC5322Regex(String emailAddress) {
-        regexPattern = "^[a-zA-Z0-9_!#$%&'*+/=?`{|}~^.-]+@[a-zA-Z0-9.-]+$";
-
-        return Pattern.compile(regexPattern)
-            .matcher(emailAddress)
-            .matches();
-    }
-
-    public static boolean restrictDots(String emailAddress) {
-        regexPattern = "^[a-zA-Z0-9_!#$%&'*+/=?`{|}~^-]+(?:\\.[a-zA-Z0-9_!#$%&'*+/=?`{|}~^-]+)*@" + "[a-zA-Z0-9-]+(?:\\.[a-zA-Z0-9-]+)*$";
-
-        return Pattern.compile(regexPattern)
-            .matcher(emailAddress)
-            .matches();
-    }
-
-    public static boolean owaspValidation(String emailAddress) {
-        regexPattern = "^[a-zA-Z0-9_+&*-]+(?:\\.[a-zA-Z0-9_+&*-]+)*@(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,7}$";
-
-        return Pattern.compile(regexPattern)
-            .matcher(emailAddress)
-            .matches();
-    }
-
-    public static boolean topLevelDomain(String emailAddress) {
-        regexPattern = "^[\\w!#$%&'*+/=?`{|}~^-]+(?:\\.[\\w!#$%&'*+/=?`{|}~^-]+)*" + "@(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}$";
-
-        return Pattern.compile(regexPattern)
-            .matcher(emailAddress)
-            .matches();
-    }
-}
\ No newline at end of file
+}