נתונות שתי המחלקות הבאות: Child (יורשת מ-Parent) ו-Driver (מכילה פעולה ראשית).

public class Child extends Parent {
    private int age;
    public Child( String fName, String lName, char gender,int age){
        super(fName, lName, gender);
        this.age = age;
    }
    public Child(){
        super("David","Cohen");
        this.age = 13;
        this.gender = 'm';
    }
    public int getBirthYear(){
        return Parent.year - this.age;
    }
    public void printDetails() {
        if(this.gender == 'f')System.out.print("Daughter ");
        else System.out.print("Son ");
        System.out.print(getName()+" was born at " + getBirthYear());
    }
}// end of class Child

public class Driver {
    public static void main(String[] args) {
        Parent.setYear(2020);
        Parent[] family = new Parent[5];
        family[0] = new Parent("Anna", "Blum");
        family[1] = new Parent("Moshe","Coehn",'m');
        family[2] = new Child();
        family[3] = new Child("Dorit","Levi",'f',24);
        family[4] = new Child("Eli","Coehn",'m',30);
        family[3].updateCity("Tel-Aviv");
        family[4].updateCity("Jerusalem");
        for(int i=0; i<family.length; i++)
        {
            family[i].printDetails();
            family[i].printCity();
        }
    }
}// end of class Driver