אוספים שיעור כיתה

import java.util.Set;
import java.util.TreeSet;

import Person.*;
import Comperators.*;

public class Main {
    public static void main(String[] args) {

        Set[] sortedPerson = new Set[3];
        sortedPerson[0] = new TreeSet(new CompareByHeight());
        sortedPerson[1] = new TreeSet(new CompareByWeight());
        sortedPerson[2] = new TreeSet(new CompareByName());

        for (int i = 0; i < sortedPerson.length; i += 1) {
            sortedPerson[i].add(new Person(170, 80, "Jhon"));
            sortedPerson[i].add(new Person(160, 50, "Kate"));
            sortedPerson[i].add(new Person(180, 85, "Bob"));
            sortedPerson[i].add(new Person(175, 70, "Din"));
            sortedPerson[i].add(new Person(166, 60, "Karl"));
        }
        System.out.println("Sorted by height: " + sortedPerson[0]);
        System.out.println("Sorted by weight: " + sortedPerson[1]);
        System.out.println("Sorted by name: " + sortedPerson[2]);
    }
}

======================================================================

package Person;

public class Person {
    public int height;
    public int weight;
    public String name;

    public Person(int height, int weight, String name) {
        this.height = height;
        this.weight = weight;
        this.name = name;
    }

    public int getHeight() {
        return height;
    }

    public int getWeight() {
        return weight;
    }

    public String getName() {
        return name;
    }

    @Override
    public String toString() {
        return "Person, " +
                "height=" + height +
                ", weight=" + weight +
                ", name='" + name + '\'';
    }
}


======================================================================

package Comperators;

import Person.Person;
import java.util.Comparator;

public class CompareByWeight implements Comparator<Person> {

    @Override
    public int compare(Person o1, Person o2) {
        if(o1.getWeight()<o2.getWeight())
            return -1;
        else if (o1.getWeight()>o2.getWeight())
            return 1;
        else
            return 0;
    }
}


=========================================================================

package Comperators;

import Person.Person;
import java.util.Comparator;

public class CompareByHeight implements Comparator<Person> {

    @Override
    public int compare(Person o1, Person o2) {
        if(o1.getHeight()<o2.getHeight())
            return -1;
        else if (o1.getHeight()>o2.getHeight())
            return 1;
        else
            return 0;
    }
}


====================================================================

package Comperators;

import Person.Person;
import java.util.Comparator;

public class CompareByName implements Comparator<Person> {

    @Override
    public int compare(Person o1, Person o2) {
        return o1.getName().compareTo(o2.getName());
    }
}