基本思路:
创建方法类Product 、 Main方法
重要操作----->循环显示选择菜单 —>实现集合的增删查改—>退出程序
我们创建一个类用来存放信息，方便实例化调用，在main方法中我们需要通过一个循环体来重复显示菜单栏，通过键盘输入来执行操作
do{}while循环可以有效的实现这一系列操作，并且通过控制台输入来控制程序的执行及终止。
代码中字段过多的case执行代码我们也可以通过封装使得更加整洁，再次不做过多修改，方便直接查看执行代码块，本文档仅为学习笔记，仍然存在很多疏漏。
Product —>商品类
import java.util.Objects;
public class Product {
private String name;
private String size;
private String configuration;
private int num;
private double price;
public Product() {
}
public Product(String name, String size, String configuration, int num, double price) {
this.name = name;
this.size = size;
this.configuration = configuration;
this.num = num;
this.price = price;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSize() {
return size;
}
public void setSize(String size) {
this.size = size;
}
public String getConfiguration() {
return configuration;
}
public void setConfiguration(String configuration) {
this.configuration = configuration;
}
public int getNum() {
return num;
}
public void setNum(int num) {
this.num = num;
}
public double getPrice() {
return price;
}
public void setPrice(double price) {
this.price = price;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Product product = (Product) o;
return num == product.num &&
Double.compare(product.price, price) == 0 &&
Objects.equals(name, product.name) &&
Objects.equals(size, product.size) &&
Objects.equals(configuration, product.configuration);
}
@Override
public int hashCode() {
return Objects.hash(name, size, configuration, num, price);
}
@Override
public String toString() {
return "Product{" +
"name='" + name + ''' +
", size='" + size + ''' +
", configuration='" + configuration + ''' +
", num=" + num +
", price=" + price +
'}';
}
public void printInfo(){
System.out.println(name+"tt" + size+"tt" + configuration+"tt"
+ num+"tt" + price+"tt" + (num * price));
}
}
实现方法 ---->main
package com.chapter02.warehouse;
import java.util.ArrayList;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Test t = new Test();
ArrayList productsList = new ArrayList<>();
boolean isLoop = true;
do {
char check = 'N';
System.out.println("------------------仓库管理----------------" + "n" +
"tttt1、查看库存" + "n" +
"tttt2、增加商品" + "n" +
"tttt3、删除库存" + "n" +
"tttt4、修改信息" + "n" +
"tttt5、退出系统" + "n");
System.out.print("请输入你要执行的操作:(整数)");
int chose = t.getScanner().nextInt();
if (chose>=1&& chose<=5){
switch (chose) {
case 1:
if (productsList.size() > 0) {
int inventory = 0;
System.out.println("序号tt" + "名称tt" + "尺寸tt" + "配置tt" + "库存tt" + "价格tt" + "t总价");
for (int i = 0; i < productsList.size(); i++) {
System.out.print((i + 1) + "tt");
productsList.get(i).printInfo();
inventory = inventory + productsList.get(i).getNum();
}
System.out.println("商品总库存:" + inventory);
} else {
System.out.println("库存为空！");
}
break;
case 2:
Product p = t.getNewProduct();
System.out.print("请入商品名称:");
String a1 = t.getScanner().next();
p.setName(a1);
System.out.print("请入商品尺寸:");
String a2 = t.getScanner().next();
p.setSize(a2);
System.out.print("请入商品配置:");
String a3 = t.getScanner().next();
p.setConfiguration(a3);
System.out.print("请入商品数量:");
int a4 = t.getScanner().nextInt();
p.setNum(a4);
System.out.print("请入商品价格:");
double a5 = t.getScanner().nextDouble();
p.setPrice(a5);
productsList.add(p);
System.out.println("添加成功！");
break;
case 3:
System.out.print("请输入你要删除的商品序号:");
int num = t.getScanner().nextInt();
System.out.println("名称tt" + "尺寸tt" + "配置tt" + "库存tt" + "价格tt" + "总价");
System.out.print("商品信息:");
productsList.get(num - 1).printInfo();
System.out.print("你确认要删除吗吗?(Y/N)");
check = t.getScanner().next().charAt(0);
if (check == 'Y') {
productsList.remove(num - 1);
}
break;
case 4:
System.out.print("请输入你要修改的商品序号:");
int num1 = t.getScanner().nextInt();
System.out.println("名称tt" + "尺寸tt" + "配置tt" + "库存tt" + "价格tt" + "总价");
productsList.get(num1 - 1).printInfo();
System.out.print("你确认要删除吗吗?(Y/N)");
check = t.getScanner().next().charAt(0);
if (check == 'Y') {
System.out.print("商品名称:" + productsList.get(num1 - 1).getName() + " ");
String str1 = t.getScanner().next();
productsList.get(num1 - 1).setName(str1);
System.out.print("商品尺寸:" + productsList.get(num1 - 1).getSize() + " ");
String str2 = t.getScanner().next();
productsList.get(num1 - 1).setSize(str2);
System.out.print("商品配置:" + productsList.get(num1 - 1).getConfiguration() + " ");
String str3 = t.getScanner().next();
productsList.get(num1 - 1).setConfiguration(str3);
System.out.print("商品库存:" + productsList.get(num1 - 1).getNum() + " ");
int str4 = t.getScanner().nextInt();
productsList.get(num1 - 1).setNum(str4);
System.out.print("商品价格:" + productsList.get(num1 - 1).getPrice() + " ");
double str5 = t.getScanner().nextDouble();
productsList.get(num1 - 1).setPrice(str5);
}
break;
case 5:
System.out.print("你确认要退出吗?(Y/N)");
check = t.getScanner().next().charAt(0);
if (check == 'Y') {
isLoop = false;
} else if (check == 'N') {
isLoop = true;
}
break;
default:
System.out.println("输入错误，请重新输入!");
break;
}
}else {
System.out.println("输入异常，请重新输入");
}
} while (isLoop);
}
public Product getNewProduct() {
Product product = new Product();
return product;
}
public Scanner getScanner() {
Scanner scanner = new Scanner(System.in);
return scanner;
}
}
