Temat: Programowanie - temat ogólny

Klasa a = new Klasa();
Klasa b = a;

int foo[] = new int[10];
int a = foo[5];

namespace foo
{
class a;
class b;
}
...
namespace bar
{
class a;
class b;
}
...
using namespace bar;
using namespace foo;

package javaapplication4;

import java.util.Scanner;

public class JavaApplication4 {

    /**
     * @param args the command line arguments
     */
    public static void main (String[] args) throws java.lang.Exception
    {
        Scanner s = new Scanner(System.in);
	double distance = s.nextDouble(); // miles
        double fuel_effiency = s.nextDouble(); // mpg
        double cost_of_petrol = s.nextDouble(); // per galon
        double car_maintenance = s.nextDouble(); // per mile
 
        double petrol_per_one_mile = 1/fuel_effiency; // ile galonow paliwa spalimy na jedna mile
        double cost_of_petrol_per_one_mile = petrol_per_one_mile * cost_of_petrol; // ile zaplacimy za paliwo, gdy przejedziemy jedna mile
 
        double driving_cost = cost_of_petrol_per_one_mile * distance + car_maintenance * distance; // spalone paliwo + koszt utrzymania auta
 
        double ticket_cost = s.nextDouble();
        System.out.println("Koszt jazdy samochodem: " + driving_cost);
        if(ticket_cost > driving_cost)
        {
            System.out.println("Bardziej oplaca sie jechac samochodem!");
            System.out.println("Kosz: " + driving_cost);
        }
        else
        {
            System.out.println("Bardziej oplaca sie jechac pociagiem!");
            System.out.println("Kosz: " + ticket_cost);
        }
	}
    
}