问如何在Android上将对象从一个活动传递给另一个活动？

public class Customer {

    private String firstName, lastName, Address;

    int Age;

    public Customer(String fname, String lname, int age, String address) {

        firstName = fname;

        lastName = lname;

        Age = age;

        Address = address;

    }

    public String printValues() {

        String data = null;

        data = "First Name :" + firstName + " Last Name :" + lastName

        + " Age : " + Age + " Address : " + Address;

        return data;

    }

}