In the following arrayList:
Nombre: Producto1, CodProducto: 1, Precio: 10.0
Nombre: Producto2, CodProducto: 2, Precio: 20.0
Nombre: Producto3, CodProducto: 3, Precio: 30.0
How can I add the price elements?
I want to get the total sum of the prices.
I assume that the ArrayList that you indicate is of some Object that owns those fields that you mention. One way to do it would be:
double precioTotal = 0;
for(Objeto objeto : arrayListObjeto) {
precioTotal += objeto.getPrecio();
}
System.out.println(precioTotal);
Or from Java 8 using streams and lambdas:
double precioTotal= arrayListObjeto.stream()
.mapToDouble(o -> o.getPrecio())
.sum();
System.out.println(precioTotal);
int result = products [0] .price + products [1] .price;
you just have to choose the products you need and add their prices: P
Here I show you an example based on the data you already have:
import java.util.*;
public class HelloWorld{
public static void main(String []args){
Data dato1 = new Data("Producto1",1,10.0);
Data dato2 = new Data("Producto2",2,20.0);
Data dato3 = new Data("Producto3",3,30.0);
ArrayList<Data> arrayList = new ArrayList<Data>();
arrayList.add(dato1);
arrayList.add(dato2);
arrayList.add(dato3);
Double total = 0.00;
for (Data data : arrayList) {
total += data.Precio;
}
System.out.println(total);
}
}
class Data {
String Nombre;
Integer CodProducto;
Double Precio;
Data(String nombre,Integer codProducto,Double precio){
this.Nombre = nombre;
this.CodProducto = codProducto;
this.Precio = precio;
}
}