商品管理系统

package demo;

import java.util.Scanner;

public class textprodtct {

public static void main(String[] args) {
	// TODO Auto-generated method stub
		Prodect[] prtar = new Prodect[20];
		int index = 0;
while (true) {
	//模拟商品系统界面

	System.out.println("*************************");
	System.out.println("********商品管理系统*********");
	System.out.println("********1.添加商品*********");
	System.out.println("********2.查询商品*********");
	System.out.println("********3.修改产品*********");
	System.out.println("********4.删除产品*********");
	System.out.println("********0.退出系统*********");
	Scanner sc = new Scanner(System.in);
	System.out.println("请输入你的指令:");
	int num = sc.nextInt();
	//判断指令
	if (num == 1) {
		System.out.println("请输入你要添加的商品的名称:");
		String name = sc.next();
		System.out.println("请输入你要添加的商品的价格:");
		int price = sc.nextInt();
		System.out.println("请输入你要添加的商品的进货商:");
		String factory = sc.next();
		System.out.println("请输入你要添加的商品的生产日期:");
		int date = sc.nextInt();
		
		
		//新建一个容器   承装商品
		Prodect prodect = new Prodect();
		prodect.name = name;
		
		prtar[index] = (Prodect) prodect;
		index++;
		System.out.println("商品添加成功!");
		
	}
	//查询商品
	else if (num == 2) {
		for (int i = 0; i < index; i++) {
			System.out.println("名称"+prtar[i].name+"价格"+prtar[i].price);
		}
	}

	//修改产品
	else if (num == 3) {
		System.out.println("请输入要修改的商品的名称:");
		
		String moname = sc.next();
		
		
		int monameindex = -1;
		//定位下标
		for (int i = 0; i < index; i++) {
			if (prtar[i].name.equals(moname)) {
				monameindex = i;
			}
			
		}
		if (monameindex == -1) {
				System.out.println("该商品不存在!");
		}
		
		else {
				System.out.println("请输入你要修改的新名称:");
				String name = sc.next();
				System.out.println("请输入价格:");
				int price = sc.nextInt();
				System.out.println("请输入生产日期:");
				int date = sc.nextInt();
				
				//构建一个容器
				Prodect prodect = new Prodect();
				prodect.price = price;
				prodect.date = date;
				
				
				prtar[monameindex] = prodect;
				System.out.println("商品修改成功!");
			}
	}
	
}
}
public static class  Prodect {
	String name;
	int num;
	String factory;
	int date;
	int price;
}

}

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转载自blog.csdn.net/amspony/article/details/88942145