package Serializable;

import javax.xml.bind.JAXBContext;

import javax.xml.bind.JAXBException;

import javax.xml.bind.Marshaller;

import javax.xml.bind.Unmarshaller;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlRootElement;

import java.io.*;

import java.util.*;

public class main {

@XmlRootElement

public static class Student implements Serializable {

@XmlElement

String surname, name, patronymic;

@XmlElement

int numberOfGroup;

@XmlElement

int[] progress = new int[5];

@XmlElement(name = "students")

private List<Student> students = null;

void setStudents(List<Student> students) {

this.students = students;

}

List<Student> getStudent() {

return students;

}

}

public static void main(String[] args) {

Student students = new Student();

students.setStudents(new ArrayList<Student>());

Scanner input = new Scanner(System.in);

Map bad = new HashMap<String, Integer>();

int size = 3;

Student[] obj = new Student[size];

for (int i = 0; i < size; i++)

obj[i] = new Student(); //initialize all objects

for (int i = 0; i < size; ++i) {

System.out.print("Enter initials (surname, name, patronymic): ");

obj[i].surname = input.nextLine();

obj[i].name = input.nextLine();

obj[i].patronymic = input.nextLine();

System.out.println("Enter num of your group: ");

obj[i].numberOfGroup = input.nextInt();

System.out.print("Enter your progress (size of array = 5): ");

for (int j = 0; j < 5; j++) {

obj[i].progress[j] = input.nextInt();

if (obj[i].progress[j] == 2)

bad.put(obj[i].surname, obj[i].numberOfGroup);

}

students.getStudent().add(obj[i]);

System.out.println();

input.nextLine();

}

System.out.println("Output array of objects: ");

System.out.println("~~~~~~~Array without sort: ~~~~~~~~");

print(obj, size);

System.out.println("~~~~~~~Modified array: ~~~~~~~");

sort(obj, size);

print(obj, size);

System.out.println("=================================\r\n");

System.out.println((bad.isEmpty()) ? "Error, students with 2 not found" : bad);

serializable(obj, size);

Student[] newStudents = deserializable(size);

System.out.println("Output from binary file deserialization: ");

for (Student p : newStudents)

System.out.printf("Surname: %s \t Name: %s \t Patronymic: %s \n", p.surname, p.name, p.patronymic);

toXml(students);

System.out.println("Output from XML file deserialization: ");

fromXml();

}

static boolean fromXml() {

try {

System.out.println("XML deserialization start");

JAXBContext jaxbContext = JAXBContext.newInstance(Student.class);

Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();

Student students = (Student)jaxbUnmarshaller.unmarshal(new File("src/Serializable/students.xml"));

for (Student st : students.getStudent())

System.out.println("Surname/Name/Patronymic: " + st.surname + " " + st.name + " " + st.patronymic);

return true;

} catch (JAXBException e) {

e.printStackTrace();

return false;

}

}

static boolean toXml(Student students) {

try {

System.out.println("XML serialization start");

File file = new File("src/Serializable/students.xml");

JAXBContext jaxbContext = JAXBContext.newInstance(Student.class);

Marshaller jaxbMarshaller = jaxbContext.createMarshaller();

jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

jaxbMarshaller.marshal(students, file);

System.out.println("Success saved in: " + file.getPath());

return true;

} catch (JAXBException e) {

e.printStackTrace();

return false;

}

}

static boolean serializable(Student[] students, int size) {

try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("src/Serializable/students.dat")))

{

for (int i = 0; i < size; ++i)

oos.writeObject(students[i]);

return true;

}

catch (Exception ex) {

System.out.println(ex.getMessage());

return false;

}

}

static Student[] deserializable(int size) {

Student[] newPeople = new Student[size];

try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream("src/Serializable/students.dat")))

{

for (int i = 0; i < size; ++i)

newPeople[i] = (Student)ois.readObject();

}

catch (Exception ex) {

System.out.println(ex.getMessage());

}

return newPeople;

}

static void print(Student[] obj, int size){

System.out.println("\r\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");

for (int i = 0; i < size; ++i) {

System.out.print("Surname/Name/Patronymic: " + obj[i].surname + " " + obj[i].name + " " + obj[i].patronymic + "\r\n");

System.out.print("Number of group: " + obj[i].numberOfGroup + "\r\n");

System.out.print("progress: ");

for (int j = 0; j < 5; ++j)

System.out.print(" " + obj[i].progress[j]);

System.out.println("\r\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");

}

}

//case-sensitive bubble sort

static Student[] sort(Student[] obj, int size){

for (int i = 0; i < size; i++)

for (int j = i + 1; j < size; j++){

if (obj[j].surname.compareTo(obj[i].surname) < 0) {

Student tmp = obj[i];

obj[i] = obj[j];

obj[j] = tmp;

}

}

return (obj);

}

}