Ввод двойной Java
import java.util.Scanner;
Scanner input = new Scanner(System.in);
double choice = input.nextDouble();
Marton
import java.util.Scanner;
Scanner input = new Scanner(System.in);
double choice = input.nextDouble();import java.util.Scanner;
Scanner input = new Scanner(System.in);
double choice = input.nextDouble();
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s=br.readLine();
Double d=Double.parseDouble(br.readLine());
int i=Integer.parseInt(br.readLine());