Les códigos de una calculadora en java !

```
public class Calculatrice {
public static void main(String[] args) {
java.util.Scanner scanner = new java.util.Scanner(System.in);

System.out.println("Entrez le premier nombre: ");
double num1 = scanner.nextDouble();

System.out.println("Entrez le deuxième nombre: ");
double num2 = scanner.nextDouble();

System.out.println("Choisissez l'opération (+, -, *, /): ");
char operation = scanner.next().charAt(0);

double result;

switch (operation) {
case '+':
result = num1 + num2;
break;
case '-':
result = num1 - num2;
break;
case '*':
result = num1 * num2;
break;
case '/':
if (num2 != 0) {
result = num1 / num2;
} else {
System.out.println("Erreur: Division par zéro.");
return;
}
break;
default:
System.out.println("Opération non valide.");
return;
}

System.out.println("Le résultat est: " + result);
scanner.close();
}
}
```