Java Basic- OOP - Interface - Quản lý mèo (cat) trong java

ColorManager:
	Red -> index: 0
	Yellow -> index: 1
	Blue -> index: 2

catList:
	Loai: A, Mau: Blue (index: 2), NoiSong: A -> colorIndex = 2
	Loai: C, Mau: Red (index: 0), NoiSong: C -> colorIndex = 0
	Loai: B, Mau: Yellow (index: 1), NoiSong: B -> colorIndex = 1

-> Mau: A -> Z
catList:
	Loai: A, Mau: Blue, NoiSong: A
	Loai: C, Mau: Red, NoiSong: C
	Loai: B, Mau: Yellow, NoiSong: B

-> Mau: Theo thu tu xuat hien cac mau trong ColorManager
	Loai: C, Mau: Red, NoiSong: C
	Loai: B, Mau: Yellow, NoiSong: B
	Loai: A, Mau: Blue, NoiSong: A
	
	-> Code nhu the nao? Giai thuat la gi???

#CatDetail.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package bt993;

import java.util.Scanner;

/**
 *
 * @author diepvan
 */
public class CatDetail implements ICat{
    String loai;
    String mau;
    String noiSong;
    int colorIndex;

    public CatDetail() {
    }

    public CatDetail(String loai, String mau, String noiSong) {
        this.loai = loai;
        this.mau = mau;
        this.noiSong = noiSong;
    }

    @Override
    public void nhap() {
        Scanner scan = new Scanner(System.in);
        
        System.out.println("Nhap loai: ");
        loai = scan.nextLine();
        System.out.println("Nhap mau: ");
        
        colorIndex = -1;
        Main.colorManager.hienthi();
        while(colorIndex == -1) {
            mau = scan.nextLine();
            
            colorIndex = Main.colorManager.getColorIndex(mau);
            
            if(colorIndex == -1) {
                System.out.println("Nhap lai: ");
            }
        }
        
        
        System.out.println("Nhap noi song: ");
        noiSong = scan.nextLine();
    }

    @Override
    public void hienthi() {
        System.out.println(this);
    }

    public String getLoai() {
        return loai;
    }

    public void setLoai(String loai) {
        this.loai = loai;
    }

    public String getMau() {
        return mau;
    }

    public void setMau(String mau) {
        this.mau = mau;
    }

    public String getNoiSong() {
        return noiSong;
    }

    public void setNoiSong(String noiSong) {
        this.noiSong = noiSong;
    }

    @Override
    public String toString() {
        return "loai=" + loai + ", mau=" + mau + ", noiSong=" + noiSong;
    }

    public int getColorIndex() {
        return colorIndex;
    }

    public void setColorIndex(int colorIndex) {
        this.colorIndex = colorIndex;
    }
    
    
}

#ColorManager.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package bt993;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

/**
 *
 * @author diepvan
 */
public class ColorManager {
    List<String> colorList;

    public ColorManager() {
        colorList = new ArrayList<>();
    }
    
    public void nhap() {
        Scanner scan = new Scanner(System.in);
        
        System.out.println("Nhap so mau can them: ");
        int n = Integer.parseInt(scan.nextLine());
        
        for (int i = 0; i < n; i++) {
            System.out.println("Nhap mau can them: ");
            String color = scan.nextLine();
            
            colorList.add(color);
        }
    }
    
    public int getColorIndex(String color) {
        for (int i = 0; i < colorList.size(); i++) {
            if(colorList.get(i).equalsIgnoreCase(color)) {
                return i;
            }
        }
        
        return -1;
    }
    
    public void hienthi() {
        System.out.println("Danh sach ma mau: ");
        for (int i = 0; i < colorList.size(); i++) {
            System.out.println((i+1) + ". " + colorList.get(i));
        }
    }
}

#ICat.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Interface.java to edit this template
 */
package bt993;

/**
 *
 * @author diepvan
 */
public interface ICat {
    String ten = "Meo";
    void nhap();
    void hienthi();
}

#Main.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package bt993;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;

/**
 *
 * @author diepvan
 */
public class Main {
    
    public static List<CatDetail> catList = new ArrayList<>();
    public static ColorManager colorManager = new ColorManager();
    public static Scanner scan = new Scanner(System.in);
    
    public static void main(String[] args) {
        int choose;
        
        do {
            showMenu();
            choose = Integer.parseInt(scan.nextLine());
            
            switch (choose) {
                case 1:
                    colorManager.nhap();
                    break;
                case 2:
                    System.out.println("Nhap so meo can them: ");
                    int n = Integer.parseInt(scan.nextLine());
                    
                    for (int i = 0; i < n; i++) {
                        CatDetail cat = new CatDetail();
                        cat.nhap();
                        
                        catList.add(cat);
                    }
                    break;
                case 3:
                    System.out.println("Danh sach meo: ");
                    for (CatDetail cat : catList) {
                        cat.hienthi();
                    }
                    break;
                case 4:
                    System.out.println("Nhap loai can tim kiem: ");
                    String loai = scan.nextLine();
                    
                    for (CatDetail cat : catList) {
                        if (cat.getLoai().equalsIgnoreCase(loai)) {
                            cat.hienthi();
                        }
                    }
                    break;
                case 5:
                    Collections.sort(catList, new Comparator<CatDetail>() {
                        @Override
                        public int compare(CatDetail o1, CatDetail o2) {
                            return o1.getMau().compareToIgnoreCase(o2.getMau());
                        }
                    });
                    
                    System.out.println("Danh sach meo: ");
                    for (CatDetail cat : catList) {
                        cat.hienthi();
                    }
                    break;
                case 6:
                    Collections.sort(catList, new Comparator<CatDetail>() {
                        @Override
                        public int compare(CatDetail o1, CatDetail o2) {
                            if(o1.getColorIndex() > o2.getColorIndex()) {
                                return 1;
                            }
                            return -1;
                        }
                    });
                    
                    System.out.println("Danh sach meo: ");
                    for (CatDetail cat : catList) {
                        cat.hienthi();
                    }
                    break;
                case 7:
                    System.out.println("Thoat!!!");
                    break;
                default:
                    System.out.println("Nhap sai!!!");
                    break;
            }
        } while (choose != 7);
    }
    
    static void showMenu() {
        System.out.println("1. Nhap mau");
        System.out.println("2. Nhap N meo");
        System.out.println("3. Hien thi");
        System.out.println("4. Tim kiem theo loai");
        System.out.println("5. Sap xep mau A-Z");
        System.out.println("6. Sap xep mau theo Color Manager");
        System.out.println("7. Thoat");
        System.out.println("Chon: ");
    }
}