本文实例讲述了Java实现商品的查找、添加、出库、入库操作。分享给大家供大家参考，具体如下：

package com.jredu.oopch08;

public class Goods1 {

private int id;

private String name;

private double price;

private String uom;

private int balance;

public Goods1(int id, String name, double price, String uom, int balance) {

super();

this.id = id;

this.name = name;

this.price = price;

this.uom = uom;

this.balance = balance;

}

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public double getPrice() {

return price;

}

public void setPrice(double price) {

this.price = price;

}

public String getUom() {

return uom;

}

public void setUom(String uom) {

this.uom = uom;

}

public int getBalance() {

return balance;

}

public void setBalance(int balance) {

this.balance = balance;

}

}

package com.jredu.oopch08;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import java.util.Scanner;

import java.util.Set;

public class TestGoods1 {

private static Map map = new HashMap<>();

private static Scanner in = new Scanner(System.in);

public static void get() {

Goods1 goods1 = new Goods1(1001, "脉动水蜜桃 ", 7.0, "1.5l", 50);

Goods1 goods2 = new Goods1(1002, "桃李熟切片 ", 6.5, "400g", 10);

Goods1 goods3 = new Goods1(1003, "吉白芝麻油 ", 9.5, "125ml", 20);

Goods1 goods4 = new Goods1(1004, "雀巢奶咖啡", 1.5, "13g", 200);

Goods1 goods5 = new Goods1(1005, "白玉黄豆芽 ", 2.4, "350g", 50);

map.put(goods1.getId(), goods1);

map.put(goods2.getId(), goods2);

map.put(goods3.getId(), goods3);

map.put(goods4.getId(), goods4);

map.put(goods5.getId(), goods5);

}

public static boolean check(int id) {

// 检测匹配id

if (!map.containsKey(id)) {

// 没有匹配id

return false;

} else {

// 有匹配的id

return true;

}

}

public static void add() {// 新增商品

System.out.println(">>新增商品");

System.out.print("请输入商品编号：");

int id = in.nextInt();

if (new TestGoods1().check(id)) {

// 有匹配的id

System.out.println("对不起，此商品已存在！");

} else {

System.out.print("请输入商品名称：");

String name = in.next();

System.out.print("请输入商品单价：");

double price = in.nextDouble();

System.out.print("请输入商品单位：");

String uom = in.next();

System.out.print("请输入商品库存：");

int balance = in.nextInt();

Goods1 goods6 = new Goods1(id, name, price, uom, balance);

map.put(goods6.getId(), goods6);

System.out.println("新增成功！");

}

}

public static void show() {// 显示商品信息

System.out.println("商品编号\t商品名称\t\t商品单价\t单位\t数量");

Set> entrySet = map.entrySet();

Iterator> iter = entrySet.iterator();

while (iter.hasNext()) {

Map.Entry entry = iter.next();

System.out.print(entry.getKey() + "\t");

System.out.println(entry.getValue().getName() + "\t\t" + entry.getValue().getPrice() + "\t"

+ entry.getValue().getUom() + "\t" + entry.getValue().getBalance());

}

}

public static void inStore() {// 入库

System.out.println(">>商品入库");

System.out.print("请输入商品编号：");

int id = in.nextInt();

for (int i = 0; i < map.size(); i++) {

if (new TestGoods1().check(id)) {

//有匹配的id

System.out.print("请输入入库数量：");

int count = in.nextInt();

int c = ((Goods1) map.get(id)).getBalance()+count;

((Goods1) map.get(id)).setBalance(c);

break;

}else{

//没有匹配的id

System.out.println("对不起，此商品不存在！");

break;

}

}

}

public void outStore() {// 出库

System.out.println(">>商品出库");

System.out.print("请输入商品编号：");

int id = in.nextInt();

for (int i = 0; i < map.size(); i++) {

if (new TestGoods1().check(id)) {

//有匹配的id

System.out.print("请输入出库数量：");

int count = in.nextInt();

if(count>((Goods1)map.get(id)).getBalance()){

System.out.println("库存不足，出库失败！");

}else{

int c = ((Goods1) map.get(id)).getBalance()-count;

((Goods1) map.get(id)).setBalance(c);

break;

}

}else{

//没有匹配的id

System.out.println("对不起，此商品不存在！");

break;

}

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

TestGoods1 t = new TestGoods1();

t.get();

//t.add();

// t.show();

// t.inStore();

t.show();

t.outStore();

t.show();

}

}

希望本文所述对大家java程序设计有所帮助。