How to dynamic cast an object from a parameter input - casting

Question

I've a class Employee here
public class Employee
{
property1;
property2;
property3;
property4;
}
and class EmployeeEntity
public class EmployeeEntity
{
property1;
property2;
property5;
property6;
}
2 these class don't inherit from another one class
I have the service like this
EmployeeService
public Employee getEmployee(Long employeeId)
{
Employee employee = new Employee();
EmployeeInDatabase employeeInDatabase = employeeDao.findEmployeeById(employeeId);
employee.setProperty1(employeeInDatabase .getProperty1());
employee.setProperty2(employeeInDatabase .getProperty2());
employee.setProperty3(employeeInDatabase .getProperty3());
employee.setProperty4(employeeInDatabase .getProperty4());
return employee;
}
public EmployeeEntity getEmployee(Long employeeId)
{
EmployeeEntity employeeEntity = new EmployeeEntity();
EmployeeInDatabase employeeInDatabase = employeeDao.findEmployeeById(employeeId);
employeeEntity .setProperty1(employeeInDatabase .getProperty1());
employeeEntity .setProperty2(employeeInDatabase .getProperty2());
employeeEntity .setProperty5(employeeInDatabase .getProperty5());
employeeEntity .setProperty6(employeeInDatabase .getProperty6());
return employeeEntity;
}
As you see that I have many dupplicated implementation for setProperty1(), setProperty2()
How could I try by this way?
EmployeeConverter
public Object setProperty1AndProperty2(Object employee, EmployeeInDatabase employeeInDatabase)
{
Object response;
if(employee instanceof Employee)
{
response = (Employee) employee;
}
if(employee instanceof EmployeeInDatabase)
{
response = (EmployeeInDatabase) employee;
}
response.setPropery1(employee.getProperty1());
response.setPropery2(employee.getProperty2());
}
From there we could use setProperty1AndProperty2 with 2 object Employee, EmployeeEntity.
Is there anyone have some solution? Thanks :)