How to store data in objects JAVA

Question

import java.util.Scanner;

public class Main {

public static void main(String[] args) {
Scanner read = new Scanner(System.in);
String firstName = read.nextLine();
String secondName = read.nextLine();
int age = read.nextInt();
int roomNumber = read.nextInt();
Customer customer = new Customer();
//set customer's data to object here

// —->> what do I need to add here thx !!

customer.saveCustomerInfo();
}
}

class Customer {
//add all necessary attributes here
String firstName;
String secondName;
int age;
int roomNumber;

public void saveCustomerInfo() {
System.out.println("First name: " + firstName);
System.out.println("Second name: " + secondName);
System.out.println("Age: " + age);
System.out.println("Room number: " + roomNumber);
}
}

Answer 1

A different approach would be to use a constructor to initalize all your instance variables

//This goes into the class under your variables
Customer(String firstName,String secondName,int age,int roomNumber){this.firstName=firstName;
this.secondName=secondName;
this.age=age;
this.roomNumber=roomNumber;};

Then pass all your variables to the constructor from the main method

Customer customer = new Customer(firstName, secondName, age, roomNumber);

then in main call your methods like so

customer.saveCustomerInfo();

//this will print everything you passed into the constructor

Answer 2

Add set-methods to your Customer-class.

public void SetAge(int ageInYears) {
age = ageInYears;
}

Customer customer1 = new Customer()
customer1.SetAge(30)

Answer 3

D_Stark thx so much i get it !