Advanced Object Concepts.I need help in understanding this solution, how everything works and relates with each other. public class TestPatient {public static void main(String[] args) {Patient pl = new Patient ();Patient p2 = new Patient ("1234", 35, "B", "+");BloodData b2 = new BloodData("A", "-");display (p1);display (p2);pl.setId("3456");pl.setAge(42);BloodData b = new BloodData("AB", "-");pl.setBloodData(b);display (p1);}public static void display (Patient p) {BloodData bt = p.getBloodData();"111System.out.println("Patient #" + p.getId() + age:++ p.getAge()+ "\n The blood is type " + bt.getBlood Type() + bt.getRhFactor());}}

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dvanced Object Concepts. I need help in understanding this solution, how everything works and relates with each other.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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