public class Employee {
    private String name;
    private String city;
    private double salary;
    private Employee() {}

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public double getSalary() {
        return salary;
    }

    public void setSalary(double salary) {
        this.salary = salary;
    }

    @Override
    public String toString() {
        return "Employee{" +
                "name='" + name + '\'' +
                ", city='" + city + '\'' +
                ", salary=" + salary +
                '}';
    }      

    public static class EmployeeBuilder {
        private Employee employee;
        public EmployeeBuilder() {
            this.employee = new Employee();
        }
        public EmployeeBuilder setName(String name) {
            employee.name = name;
            return this;
        }
        public EmployeeBuilder setCity(String city) {
            employee.city = city;
            return this;
        }
        public EmployeeBuilder setSalary(double salary) {
            employee.salary = salary;
            return this;
        }
        public Employee build() {
            return employee;
        }
    }
    
}