Vishal Reddy's code

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Doctor.java
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public class Doctor extends Person {
    int id;
    String name;

    Doctor(int i, String s, long l) {
        id = i;
        name = s;
    }
}

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Employee.java
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public class Employee extends Person {
    int id;
    String name;

    Employee(int i, String s, long l) {
        id = i;
        name = s;
    }
}

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Logic.java
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public class Logic {
    Person[] pp = new Person[10];
    private int i = 0, j = 0;

    public void setPerson(Person p) {
        pp[i++] = p;
    }

    public Person getPerson() {
        return pp[j++];
    }
}

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Person.java
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public class Person {
    int eyes = 2;
    int legs = 2;

    static void eat() {
        System.out.println("all are vegtarinan");
    }
}

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Student.java
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public class Student extends Person {
    int roolno;
    String name;

    Student(int i, String s, long l) {
        roolno = i;
        name = s;
    }
}

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test.java
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public class test {
    public static void main(String[] ars) {
        Logic p = new Logic();
        p.setPerson(new Student(101, "rajesh", 9989889856l));
        p.setPerson(new Student(102, "vishal", 888888888888l));
        p.setPerson(new Employee(10, "subhodh", 6666666666l));
        p.setPerson(new Employee(11, "laxmi", 8989898989l));
        p.setPerson(new Doctor(12, "varun", 99898988558l));
        Person p1 = p.getPerson();
        if (p1 instanceof Student) {
            Student s1 = (Student) p1;
            System.out.println(s1.roolno);
            System.out.println(s1.name);//here what how 2 obtain 2nd student of same class?
        } else if (p1 instanceof Employee) {
            Employee e1 = (Employee) p1;
            System.out.println(e1.id);//here also 2nd employee object how to get?
        } else if (p1 instanceof Doctor) {
            Doctor d = (Doctor) p1;
            System.out.println(d.name);//here also the same..
        }
    }
}