Add: (to User class) - toString, login, followPage, (to Page class) - addFollower methods.

src/model/Encryption.java

@@ -5,6 +5,7 @@ import java.security.NoSuchAlgorithmException;
 
 public class Encryption {
 
+	// https://howtodoinjava.com/java/java-security/how-to-generate-secure-password-hash-md5-sha-pbkdf2-bcrypt-examples/
 	public static String encryptMD5(String inputPassword) {
 		
 		String generatedPassword = null;

src/model/Page.java

@@ -53,5 +53,12 @@ public class Page {
 		return "Title: " + title + ", Description: " + description + ", Followers " + followers.size() + ", Posts: " + postsInPage.size();
 	}
 	
+	public boolean addFollower(User user) {
+		if(user != null){
+			followers.add(user);
+			return true;
+		}else return false;
+	}
+	
 	
 }

src/model/users/GuestUser.java

@@ -13,5 +13,9 @@ public class GuestUser {
 	//SETTERS
 	
 	//GETTERS
+	public int getId() {
+		return generatedId;
+	}
+	//OTHER METHODS
 	
 }

src/model/users/User.java

 package model.users;
 
 import model.Encryption;
+import model.Page;
 import model.Verification;
+//import model.users.GuestUser;
 
-public class User {
+public class User extends GuestUser{
 
 	private String nameAndSurname;
 	private String username;
@@ -13,6 +15,7 @@ public class User {
 	
 	//CONSTRUCTORS
 	public User() {
+		super();
 		nameAndSurname = "Empty";
 		username = "Empty";
 		password = "Empty";
@@ -20,6 +23,7 @@ public class User {
 	}
 	
 	public User(String nameAndSurname, String username, String password) {
+		super();
 		this.nameAndSurname = (Verification.verificateNameAndSurname(nameAndSurname))
 				? nameAndSurname : "Empty";
 		this.username = (Verification.verificateUsername(username))
@@ -74,4 +78,20 @@ public class User {
 		return generatedPassword;
 	}
 	
+	//OTHER METHODS
+	public String toString() {
+		return  "User ID: " + super.getId() + "Full name: " + nameAndSurname + ", Username: " + username;
+	}
+	
+	public boolean login(String inputUsername, String inputPassword) {
+		return (username == inputUsername && generatedPassword == Encryption.encryptMD5(inputPassword))?
+				true : false;
+	}
+	
+	public boolean followPage(Page page) {
+		if(page != null) {
+			return page.addFollower(this)? true : false;
+		}else return false;
+	}
+	
 }