problem scan variable to add to arraylist

Question

Good morning, I'm learning Java, I had a problem and I don't know what the solution is... I want to add a certain amount of data (name, address, money) to an arraylist, I do a for loop for this and when executing the Variable reading is not done correctly. When I use nextLine to read variable 0, the program jumps to 1, so I don't enter the amount of information I want Now, when I use next() this doesn't happen, but when I want to enter a space-separated name as data, the same jump is done as if I were using nextLine... does anyone have any recommendations? arrays

my code is not finished since I can't go from here

public static void main(String\[\] args) {
    Scanner sc = new Scanner(System.in);
    List <Cliente> lista = new ArrayList<Cliente>(); //declaracion y asignacion del ArrayList
    Cliente clie = new Cliente();

    System.out.println("De la cantidad de cientes a ingresar: ");
    int n = sc.nextInt();
    
    for (int i = 0; i < n; i ++) {
        //lista.add(new Cliente("nico","ramos ",1,25000));
        System.out.println("Al cliente se le asigno un numero de cliente");
        clie.setCodigoCliente(i);
        System.out.println("Ingrese el nombre del cliente " +i);
        String nom;
        clie.setNombre(nom = sc.nextLine());
        System.out.println("Ingrese la direccion del cliente "+i);
        String direccion;
        clie.setDireccion(direccion = sc.nextLine());
    }
}

public class Cliente {

    int codCliente;
    String nombre;
    String direccion;
    double credito;

    public Cliente() { }

    public Cliente(String nombre, String direccion, double credito) {
        // this.codCliente = codCliente;
        this.nombre = nombre;
        this.direccion = direccion;
        this.credito = credito;
    }

    // Getters and setters omitted for brevity

}

Answer 1

Try this code:

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

class ClientTest {

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);

    List<Cliente> lista = new ArrayList<Cliente>(); //declaracion y asignacion del ArrayList Cliente clie = new Cliente();
    System.out.println("Enter how many clients will be added:");
    int n = sc.nextInt(); // if you will type here '2 abc' then
//n will be '2' and nextLine will be ' abc' that's why 'sc = new Scanner(System.in)' is used to reset the scanner

    sc = new Scanner(System.in);
    for (int i = 0; i < n; i++) {

        Cliente cliente = new Cliente();
        cliente.setCodigoCliente(i);
        System.out.println("Enter number of client# " + i);
        cliente.setNombre(sc.nextLine());
        System.out.println("Enter direccion of client: " + i);
        cliente.setDireccion(sc.nextLine());
        lista.add(cliente);
    }
    System.out.println(lista);
}

}

class Cliente {

int codCliente;
String nombre;
String direccion;
double credito;

public Cliente() {

}

public Cliente(String nombre, String direccion, double credito) {
    // this.codCliente = codCliente;
    this.nombre = nombre;
    this.direccion = direccion;
    this.credito = credito;
}

@Override
public String toString() {
    return "Cliente{" +
            "codCliente=" + codCliente +
            ", nombre='" + nombre + '\'' +
            ", direccion='" + direccion + '\'' +
            ", credito=" + credito +
            '}';
}

public void setCodigoCliente(int codCliente) {
    this.codCliente = codCliente;
}

public void setNombre(String nombre) {
    this.nombre = nombre;
}

public void setDireccion(String direccion) {
    this.direccion = direccion;
}

public void setCredito(double credito) {
    this.credito = credito;
}

public int getCodCliente() {
    return codCliente;
}

public String getNombre() {
    return nombre;
}

public String getDireccion() {
    return direccion;
}

public double getCredito() {
    return credito;
}
}

Answer 2

Change String nombre to int nombre since you want that to be an incrementing number rather than text.

If the main purpose of your class Cliente is to communicate data transparently and immutably, define your class as a record.

public record Cliente( int nombre , String direccion , double credito ) { }

Tip: A record can be defined locally within a method, or nested within another class, or in its own standalone .java file.

With your scanner collect all the needed data before instantiating the client. Generally best to separate user-interface from other code.

When using scanner commands such as nextInt and nextDouble, be sure to consume the leftover end-of-line with a call to nextLine. See Answers on this Question.

record Cliente( int nombre , String direccion , double credito ) { }
Scanner scanner = new Scanner( System.in );

System.out.println( "How many?" );
int count = scanner.nextInt();
scanner.nextLine(); // Consume the end-of-line left over from the `nextInt` call.
List < Cliente > clientes = new ArrayList <>( count );  // When convenient and sensible, specify the initial capacity of a new `ArrayList`.

for ( int nth = 1 ; nth <= count ; nth++ )
{
    // Gather inputs from user-interface.
    System.out.println( "direccion: " );
    String d = scanner.nextLine();

    System.out.println( "credito: " );
    double c = scanner.nextDouble();
    scanner.nextLine(); // Consume the end-of-line left over from the `nextDouble` call.

    // Instantiate business object.
    Cliente cliente = new Cliente( nth , d , c );
    clientes.add( cliente );
}
System.out.println( clientes );

How many?
3
direccion: 
one
credito: 
1.1
direccion: 
two
credito: 
2.2
direccion: 
three
credito: 
3.3
[Cliente[nombre=1, direccion=one, credito=1.1], Cliente[nombre=2, direccion=two, credito=2.2], Cliente[nombre=3, direccion=three, credito=3.3]]