Email and Password validation class added

app/src/main/java/com/example/readitai/SignUp.java

@@ -5,20 +5,29 @@
 
 import androidx.appcompat.app.AppCompatActivity;
 
+import com.google.firebase.auth.FirebaseAuth;
+import com.google.firebase.auth.FirebaseUser;
+
 public class SignUp extends AppCompatActivity {
 
+    FirebaseAuth mAuth;
+
     @Override
     protected void onCreate(Bundle savedInstanceState){
         super.onCreate(savedInstanceState);
         setContentView(R.layout.signup);
 
-        EditText username = (EditText) findViewById(R.id.usernamesu);
-        String usernameText = String.valueOf(username.getText());
+
+        mAuth = FirebaseAuth.getInstance();
+
+        EditText email = (EditText) findViewById(R.id.usernamesu);
+        String usernameText = String.valueOf(email.getText());
 
         EditText password = (EditText) findViewById(R.id.passwordsu);
         String passwordText = String.valueOf(password.getText());
 
         EditText passwordAgain = (EditText) findViewById(R.id.passwordAgain);
         String passwordAgainText = String.valueOf(passwordAgain.getText());
     }
+
 }

app/src/main/java/com/example/readitai/Validator.java

@@ -0,0 +1,26 @@
+package com.example.readitai;
+
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class Validator {
+
+    // Regular expression patterns for email and password validation
+    private static final String EMAIL_PATTERN = "^[a-zA-Z0-9_+&*-]+(?:\\.[a-zA-Z0-9_+&*-]+)*@(?:[a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,7}$";
+    private static final String PASSWORD_PATTERN = "^(?=.*[0-9])(?=.*[!@#$%^&*()_+\\-=\\[\\]{};':\"\\\\|,.<>\\/?]).{7,}$";
+
+    private static final Pattern emailPattern = Pattern.compile(EMAIL_PATTERN);
+    private static final Pattern passwordPattern = Pattern.compile(PASSWORD_PATTERN);
+
+    public static boolean isValidEmail(String email) {
+        Matcher matcher = emailPattern.matcher(email);
+        return matcher.matches();
+    }
+
+    public static boolean isValidPassword(String password) {
+        Matcher matcher = passwordPattern.matcher(password);
+        return matcher.matches();
+    }
+}
+