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

#CatDetail.java

/*
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 */
package com.gokisoft.c2209i.bt993;

import java.util.Scanner;

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

    public CatDetail() {
    }

    @Override
    public void nhap() {
        System.out.println("===== NHAP THON TIN MEO =======");
        Scanner scan = new Scanner(System.in);
        
        System.out.println("Nhap loai: ");
        loai = scan.nextLine();
        //Nhap mau -> danh sach colorManager
        //Lay danh sach mau trong ColorManager > Main.colorManager
        
        while(true) {
            Main.colorManager.hienthi();
            System.out.println("Nhap mau: ");
            mau = scan.nextLine();
            
            colorIndex = Main.colorManager.checkColor(mau);
            if(colorIndex >= 0) {
                break;
            }
        }
        
        System.out.println("Nhap noi song: ");
        noiSong = scan.nextLine();
    }

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

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

    public int getColorIndex() {
        return colorIndex;
    }

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

#ColorManager.java

/*
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 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package com.gokisoft.c2209i.bt993;

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

/**
 *
 * @author teacher
 */
public class ColorManager implements ICat{
    ArrayList<String> colorList;

    public ColorManager() {
        colorList = new ArrayList<>();
    }

    public ArrayList<String> getColorList() {
        return colorList;
    }

    @Override
    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: ");
            String color = scan.nextLine();
            
            colorList.add(color);
        }
    }

    @Override
    public void hienthi() {
        System.out.println("Danh sach mau: ");
        
        for (int i = 0; i < colorList.size(); i++) {
            System.out.println(i + ". " + colorList.get(i));
        }
    }
    
    public int checkColor(String color) {
        for (int i = 0; i < colorList.size(); i++) {
            if(colorList.get(i).equalsIgnoreCase(color)) {
                return i;
            }
        }
        
        return -1;
    }
}

#ICat.java

/*
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 */
package com.gokisoft.c2209i.bt993;

/**
 *
 * @author teacher
 */
public interface ICat {
    //public final String TEN = "MEO";
    String TEN = "MEO";
    void nhap();
    void hienthi();
}

#Main.java

/*
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 */
package com.gokisoft.c2209i.bt993;

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

/**
 *
 * @author teacher
 */
public class Main {
    static ArrayList<CatDetail> catList = new ArrayList<>();
    static Scanner scan = new Scanner(System.in);
    public static ColorManager colorManager = new ColorManager();
    
    public static void main(String[] args) {
        int choose;
        
        do {            
            showMenu();
            choose = Integer.parseInt(scan.nextLine());
            
            switch (choose) {
                case 1:
                    colorManager.nhap();
                    break;
                case 2:
                    inputCat();
                    break;
                case 3:
                    displayCat();
                    break;
                case 4:
                    sortByColor();
                    break;
                case 5:
                    findByType();
                    break;
                case 6:
                    sortByColorManager();
                    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 con meo");
        System.out.println("3. Hien thi");
        System.out.println("4. Sap xep theo mau");
        System.out.println("5. Tim thong tin theo loai");
        System.out.println("6. Sap xep theo ColorManager");
        System.out.println("7. Thoat");
        System.out.println("Chon: ");
    }

    public static void inputCat() {
        if(colorManager.getColorList().isEmpty()) {
            System.out.println("Yeu cau nhap ma mau truoc");
            return;
        }
        
        System.out.println("Nhap so meo can them N = ");
        int n = Integer.parseInt(scan.nextLine());
        
        for (int i = 0; i < n; i++) {
            CatDetail catDetail = new CatDetail();
            catDetail.nhap();
            
            catList.add(catDetail);
        }
    }

    public static void displayCat() {
        System.out.println("Thong tin danh sach MEO: ");
        for (CatDetail catDetail : catList) {
            catDetail.hienthi();
        }
//        for (int i = 0; i < catList.size(); i++) {
//            catList.get(i).hienthi();
//        }
    }

    public static void sortByColor() {
        Collections.sort(catList, new Comparator<CatDetail>() {
            @Override
            public int compare(CatDetail o1, CatDetail o2) {
                //1: Doi cho, -1: Khong doi cho -> TEST lai.
                return o1.getMau().compareToIgnoreCase(o2.getMau());
            }
        });
        
        displayCat();
    }

    public static void findByType() {
        String loai;
        System.out.println("Nhap loai can tim kiem: ");
        loai = scan.nextLine();
        
        for (int i = 0; i < catList.size(); i++) {
            if(catList.get(i).getLoai().equalsIgnoreCase(loai)) {
                catList.get(i).hienthi();
            }
        }
    }

    public static void sortByColorManager() {
        Collections.sort(catList, new Comparator<CatDetail>() {
            @Override
            public int compare(CatDetail o1, CatDetail o2) {
                if(o1.getColorIndex() > o2.getColorIndex()) {
                    return 1;
                }
                return -1;
            }
        });
        displayCat();
    }
}