ArrayList Collection: Inventory Management

 

import java.util.ArrayList;
import java.lang.Integer;
import java.util.Scanner;
import java.util.Random;
class work
{
    // inventory management 
    public  static  void main (String [] args)
    {
        ArrayList<KuCun> list=new ArrayList<KuCun>();
        B1 KuCun = new new KuCun ();
        B2 KuCun = new new KuCun ();
        B3 KuCun = new new KuCun ();

        // All brands 
        b1.brand = "MacbookAir" ;
        b2.brand="ThinkPadT450";
        b3.brand = "ASUS-FL5800" ;
         // All dimensions 
        b1.size = 13.3 ;
        b2.size=14.0;
        b3.size = 15.6 ;
         // all inventory 
        b1.num = 5 ;
        b2.num = 10 ;
        b3.num = 18 ;
         // All prices 
        b1.price = 6988.88 ;
        b2.price=5999.99;
        b3.price=4999.5;

        list.add(b1);
        list.add(b2);
        list.add(b3);
        
        show(list);
    }
    // performs encapsulation 
    public  static  void Show (the ArrayList <KuCun> List) {
        Scanner sc=new Scanner(System.in);
        while(true){
        System.out.println ( "Inventory Management ---------------- ----------------" );
        System.out.println ( "1. Check inventory" );
        System.out.println ( "2. Modify the number of commodity stocks" );
        System.out.println ( "3. Exit" );
        System.out.println("----------------------------------------");
        System.out.println ( "Please input operation number to be performed:" );
             int in = sc.nextInt ();
             Switch (in) {
             Case . 1 :
                look(list);
                break;
            case 2:
                select(list);
                BREAK ;
             Case 3 :
                 return ; // BREAK AA; return: the return call my local 
            default :
                System.out.println("----------------------------------------");
                System.out.println ( "Please enter the correct operation of the serial number!" );
                System.out.println("----------------------------------------");
                break;
            }
        }
    }
    // print inventory functions 
    public  static  void look (the ArrayList <KuCun> List) {
         int SUM = 0 ;
         int allSum = 0 ;
        System.out.println ( "brand \ t \ t size \ t inventory \ t price" );
        System.out.println("----------------------------------------");
        for(int i=0;i<list.size();i++){
            sum+=list.get(i).num;
            allSum+=list.get(i).num*list.get(i).price;
            System.out.print(list.get(i).brand+"\t"+list.get(i).size+"\t"+list.get(i).num+"\t"+list.get(i).price);
            System.out.println();
        }
        System.out.println ( "total inventory:" + SUM);
        System.out.println ( "The total amount of goods:" + allSum);
    }
    // Number of stock editing 
    public  static  void SELECT (the ArrayList <KuCun> List) {
        System.out.println ( "Please enter the number you want to modify the product" );
         for ( int I = 0; I <list.size (); I ++ ) {
            System.out.print((i+1)+":"+list.get(i).brand);
            System.out.println();
        }
        Scanner sc=new Scanner(System.in);
        int in=sc.nextInt();
        while(true){
            switch(in){
            case 1:
                System.out.println ( "trade name:" + List.get (-in. 1 ) .brand);
                System.out.println ( "Please change the number of stocks" );
                 int the Add = sc.nextInt ();
                list.get(in-1).num=add;
                System.out.println ( "modified" + list.get (in-1) .brand + " stock is:" + the Add);
                System.out.println();
                return;
            case 2:
                System.out.println ( "trade name:" + List.get (-in. 1 ) .brand);
                System.out.println ( "Please change the number of stocks" );
                add=sc.nextInt();
                list.get(in-1).num=add;
                System.out.println ( "modified" + list.get (in-1) .brand + " stock is:" + the Add);
                System.out.println();
                return;
            case 3:
                System.out.println ( "trade name:" + List.get (-in. 1 ) .brand);
                System.out.println ( "Please change the number of stocks" );
                add=sc.nextInt();
                list.get(in-1).num=add;
                System.out.println ( "modified" + list.get (in-1) .brand + " stock is:" + the Add);
                System.out.println();
                return;
            case 00:
                return;
            default:
                System.out.println ( "Please enter the correct item number" );
                in=sc.nextInt();
                break;
            }
        }
    }
}

// custom class 
class KuCun
{
        // All brands 
        String Brand;
         // all sizes 
        Double size;
         // all inventory 
        int NUM;
         // All prices 
        Double . Price;

}