@Override
	public int hashCode()
	{
//		System.out.println("Employee.hashCode() called");
		
		final int prime = 31;
		int result = 1;
		result = prime * result
				+ ((hireDate == null) ? 0 : hireDate.hashCode());
		result = prime * result + id;
		result = prime * result + ((firstName == null) ? 0 : firstName.hashCode());
		result = prime * result + ((lastName == null) ? 0 : lastName.hashCode());
		result = prime * result + Float.floatToIntBits(sallary);
		return result;
	}