Fill the object with multiple equal conditions

I have a object named Person .
I want to fill this object with multiple equal conditions .
this is my example code :

class Person {
    String name ;
    String family ;
    /* Getter and Setter */
}

class Scratch {
    public Person getPerson() {
        Person p = null ;
        if (p == null) {
            /* Fill object with method A*/
        }

        if (p == null) {
            /* Fill object with method B*/
        }

        if (p == null) {
            /* Fill object with method C*/
        }

        /*
        * Maybe i have more conditions ...
        * */

        return p ;
    }
}   

I searching for better solution .
have any design pattern for this subject ?