Error in my java class NEED HELP

Question

public class User

{

private String firstName;

private String lastName;

private LoginCredentials loginCredentials;

/**

*

*/

public User(String firstName, String lastName)

{

this.firstName = firstName;

this.lastName = lastName;

String userName = Character.toLowerCase(firstName.charAt(0)) + lastName.toLowerCase();

String password = firstName.charAt(0) + lastName + "@123";

loginCredentials = new LoginCredentials(userName, password);

}

/**

*

*/

public String toString()

{

return "User login \nFirst Name = " + firstName

+ "\nLast Name = " + lastName

+ "\nUser Name = " + loginCredentials.toString();

}

/**

*

*/

public boolean equals(User obj)

{

if(loginCredentials.equals(obj.loginCredentials))

{

return true;

}

else

{

return false;

}

}

//to test the login credientials

/**

*

*/

public static void main(String[] args)

{

Scanner sc = new Scanner(System.in);

System.out.print("Please enter your first name: ");

String input = sc.nextLine();

System.out.print("Please enter your last name: ");

String input2 = sc.nextLine();

System.out.println("____________________________________________");

String firstName_of_user = input;

String lastName_of_user = input2;

User username = new User(firstName_of_user, lastName_of_user );

System.out.println(username);

System.out.println("____________________________________________");

User password = new User( username + "@123");

System.out.print("Generated password is: " + password);

}

}

ERROR: java.lang.String found: java.lang.String,char reason: actual and formal argument lists differ in length

Answer 1

The error I see in the highlighted line is that you are calling on User's constructor which requires 2 String arguments, String firstName and String lastName. You are passing it "username" which is a 'User' Object not a string.

When you call User's constructor the first time in this line "User username = new User(firstName_of_user, lastName_of_user );", it generates a password in the format you're looking for based on this line "String password = firstName.charAt(0) + lastName + "@123";". Have you learned about Getters and Setters? It appears that you are attempting to print out the generated password for this user and a getter method inside of user would help you accomplish this. This is somewhat of speculation on my part since I do not know what the assignment is asking for.

I would be happy to work more with you on this project if you would like to schedule a tutoring session and if not I hope I have helped you in some way with my response :)