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@GlebGomenyuk

GlebGomenyuk/Group

Created Feb 18, 2020
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package com.g;
import java.util.List;
import java.io.Serializable;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedList;
import Exception.MyDelException;
import Exception.MyException;
import Exception.MyserchExeption;
public class Group implements Serializable {
List<Student> studentCollection = new LinkedList<>();
int maxSizeGroup = 10;
public Group() {
super();
// TODO Auto-generated constructor stub
}
public Group(List students) {
super();
this.studentCollection = students;
}
public List getStudents() {
return studentCollection;
}
public void setStudents(List students) {
this.studentCollection = students;
}
public void addStudent(Student student) throws MyException {
if (student == null) {
throw new MyException();
}
if (studentCollection.size() >= maxSizeGroup) {
throw new MyException();
}
studentCollection.add(student);
}
public void delStudent(int dellIndex) throws MyDelException {
if (dellIndex > studentCollection.size()) {
throw new MyDelException("Вы пытаетесь удалить студента которого нет в группе ");
}
if (studentCollection.get(dellIndex) != null) {
Student st = studentCollection.get(dellIndex);
studentCollection.remove(dellIndex);
System.out.println("Student " + st.getName() + " Удален");
}
}
public Student serch(String name) throws MyserchExeption {
for (Student studen : studentCollection) {
if (studen.getName().equals(name)) {
return studen;
}
}
for (Student studen : studentCollection) {
if (!studen.getName().equals(name)) {
throw new MyserchExeption();
}
}
return null;
}
public void sort() {
studentCollection.sort(new StudentComparator());
}
@Override
public String toString() {
sort();
StringBuilder sb = new StringBuilder();
for (Student student : studentCollection) {
if (student != null) {
sb.append(student);
sb.append(System.lineSeparator());
}
}
return sb.toString();
}
}
package com.g;
import java.io.Serializable;
public class Human implements Serializable{
private String name;
private String surname;
private int age;
public Human(String name, String surname, int age) {
super();
this.name = name;
this.surname = surname;
this.age = age;
}
public Human() {
super();
// TODO Auto-generated constructor stub
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSurname() {
return surname;
}
public void setSurname(String surname) {
this.surname = surname;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public void getInfo() {
System.out.println("Human [name=" + name + ", surname=" + surname + ", age=" + age + "]");
}
}
package com.g;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import Exception.MyDelException;
import Exception.MyException;
import Exception.MyserchExeption;
public class Main {
public static void main(String[] args) throws ClassNotFoundException, NullPointerException {
// List<Student> studentCollection = new LinkedList<>();
// studentCollection.add(new Student("Igor", "Brilov", 21, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Egor", "Vlasov", 20, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Georg", "Manykyan", 20, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Boris", "Akynin", 20, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Alex", "Clar", 22, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Lana", "DelRey", 22, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Lina", "Cravetc", 19, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Thom", "York", 20, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("John", "Lenon", 20, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Pol", "Jons", 20, "NAU", "YIB", 2, 231));
// studentCollection.add(new Student("Pol", "Jons", 20, "NAU", "YIB", 2, 231));
Student firstStuden = new Student("Igor", "Brilov", 21, "NAU", "YIB", 2, 231);
Student secondStuden = new Student("Egor", "Vlasov", 20, "NAU", "YIB", 2, 231);
Student thirdStuden = new Student("Georg", "Manykyan", 20, "NAU", "YIB", 2, 231);
Student foursStuden = new Student("Boris", "Akynin", 20, "NAU", "YIB", 2, 231);
Student fifthStuden = new Student("Alex", "Clar", 22, "NAU", "YIB", 2, 231);
Student sixthStuden = new Student("Lana", "DelRey", 22, "NAU", "YIB", 2, 231);
Student seventhStuden = new Student("Lina", "Cravetc", 19, "NAU", "YIB", 2, 231);
Student eigthStuden = new Student("Thom", "York", 20, "NAU", "YIB", 2, 231);
Student ninthStuden = new Student("John", "Lenon", 20, "NAU", "YIB", 2, 231);
Student tenthStuden = new Student("Pol", "Jons", 20, "NAU", "YIB", 2, 231);
Student eleventhStuden = new Student("Pol", "Jons", 20, "NAU", "YIB", 2, 231);
Student eleventhStudenn = new Student();
Group firstGroup = new Group();
try {
firstGroup.addStudent(firstStuden);
firstGroup.addStudent(firstStuden);
firstGroup.addStudent(firstStuden);
firstGroup.addStudent(firstStuden);
firstGroup.addStudent(foursStuden);
firstGroup.addStudent(fifthStuden);
firstGroup.addStudent(sixthStuden);
firstGroup.addStudent(seventhStuden);
firstGroup.addStudent(eigthStuden);
firstGroup.addStudent(tenthStuden);
firstGroup.addStudent(eleventhStudenn);
firstGroup.addStudent(eleventhStuden);
firstGroup.addStudent(eleventhStuden);
} catch (MyException e) {
System.out.println(e.getMessage());
}
try {
firstGroup.delStudent(224);
} catch (MyDelException e) {
System.out.println(e.getMessage());
}
try {
System.out.println("Нашли " + firstGroup.serch("Igor"));
System.out.println("Нашли " + firstGroup.serch("yu"));
} catch (MyserchExeption e) {
System.out.println(e.getMessage());
}
try (ObjectOutputStream OOS = new ObjectOutputStream(new FileOutputStream("weri"))) {
OOS.writeObject(firstGroup);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
Group f = null;
try (ObjectInputStream OIS = new ObjectInputStream(new FileInputStream("weri"))) {
f = (Group) OIS.readObject();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException | ClassNotFoundException e) {
e.printStackTrace();
}
System.out.println(f);
}
}
package com.g;
import java.util.Comparator;
public class StudentComparator implements Comparator {
@Override
public int compare(Object o1, Object o2) {
Student st1 = (Student) o1;
Student st2 = (Student) o2;
if (st1 == null && st2 != null) {
return -1;
}
if (st1 != null && st2 == null) {
return 1;
}
if (st1 == null && st2 == null) {
return 0;
}
if (st1.getSurname().compareToIgnoreCase(st2.getSurname()) > 0) {
return 1;
}
if (st1.getSurname().compareToIgnoreCase(st2.getSurname()) < 0) {
return -1;
}
return 0;
}
}
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