class Employee {
	private String name;
	private int salary;
	public Employee(String n, int s) {name=n;salary=s;}
	public String toString() {return String.format("%s(%d)",name,salary);}
	public int getSalary() {return salary;}
	public void setSalary(int s) {salary=s;}
}

class Day {
	private int year, month, day;
	public Day(int y, int m, int d) {year=y;month=m;day=d;}
	public String toString() {return day+"/"+month+"/"+year;}
	public int getYear() {return year;}
	public int getMonth() {return month;}
	public int getDay() {return day;}
	public void set(int y, int m, int d) {year=y;month=m;day=d;}
}

public class Main_TestOverloading {

	private static void swap(Day a, Day b) {
		int y=a.getYear();
		int m=a.getMonth();
		int d=a.getDay();
		a.set(b.getYear(), b.getMonth(), b.getDay());
		b.set(y, m, d); 
	}

	private static void swap(Employee a, Employee b) {
		int s = a.getSalary();
		a.setSalary(b.getSalary());
		b.setSalary(s);
	}

	public static void main(String[] args) 
	{
		Employee e1 = new Employee("Helena",10000);
		Employee e2 = new Employee("Peter",20000);

		Day d1 = new Day(2014,1,15);
		Day d2 = new Day(2015,12,30);
		
		swap(d1,d2);
		swap(e1,e2);

		System.out.println(e1);
		System.out.println(e2);
		System.out.println(d1);
		System.out.println(d2);
	}
}