ざっくりオブジェクト指向プログラミング解説：サンプルコード＃４実践編②

2020年5月24日 12:38

　こちらは別サイトの動画の『ざっくりオブジェクト指向プログラミング解説』で使用したサンプルコードを公開する記事になっています。
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※第４章は、３店舗追加バージョンのみです。

3.1 Main　ー第４章ソースコードー

　各オブジェクトを生成して、コントローラーに処理を渡す。

import Basket.BasicInformation;
import Basket.PurchasedGoods;
import receipt.nooop.ReceiptControllerVer3;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;

public class Main {

   public static void main(String[] args) {
       BasicInformation basicInformation = getBasicInformation();
       BasicInformation basicInformation2 = getBasicInformationYukari();
       BasicInformation basicInformation3 = getBasicInformationMaki();

       List<PurchasedGoods> goodsList = getGoodsList();
       List<PurchasedGoods> goodsList2 = getGoodsListYukari();
       List<PurchasedGoods> goodsList3 = getGoodsListMaki();

       ReceiptControllerVer3 receiptController = new ReceiptControllerVer3();

       receiptController.execute(basicInformation,goodsList);
       System.out.println();
       receiptController.execute(basicInformation2,goodsList2);
       System.out.println();
       receiptController.execute(basicInformation3,goodsList3);
   }

   //テスト用のBasicInformationを生成する
   private static BasicInformation getBasicInformation(){
       Calendar c = Calendar.getInstance();
       c.set(2019,1,10,12,34,50);

       return new BasicInformation(ReceiptControllerVer3.STORE_NM_ITAKO,"恐山支店",c.getTime(),"2000","999-3456-0000","");
   }

   //テスト用のBasicInformationを生成する
   private static BasicInformation getBasicInformationYukari(){
       Calendar c = Calendar.getInstance();
       c.set(2019,1,10,12,34,50);

       return new BasicInformation(ReceiptControllerVer3.STORE_NM_YUKARI,null,c.getTime(),"5000","012-3456-0000","");
   }

   //テスト用のBasicInformationを生成する
   private static BasicInformation getBasicInformationMaki(){
       Calendar c = Calendar.getInstance();
       c.set(2019,1,10,12,34,50);

       return new BasicInformation(ReceiptControllerVer3.STORE_NM_MAKI,"東京支店",c.getTime(),"2000","03-0000-0000","東京都千代田区××０丁目");
   }

   //テスト用のPurchasedGoodsリストを生成する
   private static List<PurchasedGoods> getGoodsList(){
       ArrayList<PurchasedGoods> goodsList = new ArrayList<PurchasedGoods>();

       goodsList.add(new PurchasedGoods("あじの盛り塩焼き","500"));
       goodsList.add(new PurchasedGoods("水の子サラダ","250"));
       goodsList.add(new PurchasedGoods("お神酒","300"));

       return goodsList;
   }

   //テスト用のPurchasedGoodsリストを生成する
   private static List<PurchasedGoods> getGoodsListYukari(){
       ArrayList<PurchasedGoods> goodsList = new ArrayList<PurchasedGoods>();

       goodsList.add(new PurchasedGoods("猿でもわかる手続き型","1500"));
       goodsList.add(new PurchasedGoods("猫でもわかるOOP","1250"));
       goodsList.add(new PurchasedGoods("犬でもわかる関数型","1300"));

       return goodsList;
   }

   //テスト用のPurchasedGoodsリストを生成する
   private static List<PurchasedGoods> getGoodsListMaki(){
       ArrayList<PurchasedGoods> goodsList = new ArrayList<PurchasedGoods>();

       goodsList.add(new PurchasedGoods("パン","200"));
       goodsList.add(new PurchasedGoods("ミネラルウォーター","250"));
       goodsList.add(new PurchasedGoods("とりにく","300"));
       goodsList.add(new PurchasedGoods("いちご","400"));

       return goodsList;
   }
}

3.2 ReceiptControllerVer3 　ー第４章ソースコードー

　３店舗対応バージョン

package receipt.nooop;

import Basket.BasicInformation;
import Basket.PurchasedGoods;

import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.List;

public class ReceiptControllerVer3 {
   public static final String STORE_NM_ITAKO = "イタコ食堂";
   public static final String STORE_NM_YUKARI = "ゆかり書房";
   public static final String STORE_NM_MAKI = "マキマキマーケット";

   public final static String HR =  "===============================";
   public final static String HR2 = " ----------------------------- ";

   public void execute(BasicInformation basicInformation, List<PurchasedGoods> purchasedGoodsList){
       //header
       createHeader(basicInformation);

       //contents
       createContents(basicInformation, purchasedGoodsList);

       //footer
       createFooter(basicInformation);

   }

   private void createHeader(BasicInformation basicInformation){
       System.out.println();
       System.out.println(lineFormatCenter(basicInformation.getStoreName()));
       if(basicInformation.getStoreName().equals(STORE_NM_ITAKO) ||
               basicInformation.getStoreName().equals(STORE_NM_MAKI)){
           System.out.println(basicInformation.getBranchName());
       }
       if(basicInformation.getStoreName().equals(STORE_NM_MAKI)){
           System.out.println("  " + basicInformation.getAddress());
           System.out.println("  " + basicInformation.getPhoneNumber());
           SimpleDateFormat sdf = new SimpleDateFormat("           yyyy/MM/dd　hh:mm:ss");
           System.out.println(sdf.format(basicInformation.getPurchaseTime()));
       }else{
           System.out.println();
       }
       System.out.println(HR);
   }

   private void createContents(BasicInformation basicInformation, List<PurchasedGoods> purchasedGoodsList){
       String printStr = null;
       BigDecimal sum = new BigDecimal("0");
       for(PurchasedGoods goods : purchasedGoodsList){
           sum = sum.add(goods.getPrice());
           if(basicInformation.getStoreName().equals(STORE_NM_ITAKO)) {
               printStr = lineFormatGoodsRow(goods.getGoodsName(), goods.getPrice());
           }else if(basicInformation.getStoreName().equals(STORE_NM_YUKARI)) {
               printStr = lineFormatGoodsRowYenSign(goods.getGoodsName(), goods.getPrice());
           }else {
               printStr = lineFormatGoodsRowNoSign(goods.getGoodsName(), goods.getPrice());
           }
           System.out.println(printStr);
       }
       System.out.println(HR2);
       if(basicInformation.getStoreName().equals(STORE_NM_ITAKO)) {
           printStr = lineFormatGoodsRow("合計", sum);
       }else {
           printStr = lineFormatGoodsRowYenSign("合計", sum);
       }
       System.out.println(printStr);

       System.out.println(HR2);
       basicInformation.getPaymentAmount().intValue();
       if(basicInformation.getStoreName().equals(STORE_NM_ITAKO)) {
           printStr = lineFormatGoodsRow("お預り", basicInformation.getPaymentAmount());
       }else {
           printStr = lineFormatGoodsRowYenSign("お預り", basicInformation.getPaymentAmount());
       }
       System.out.println(printStr);

       BigDecimal change = basicInformation.getPaymentAmount().subtract(sum);
       if(basicInformation.getStoreName().equals(STORE_NM_ITAKO)) {
           printStr = lineFormatGoodsRow("お釣り", change);
       }else{
           printStr = lineFormatGoodsRowYenSign("お釣り", change);
       }
       System.out.println(printStr);
   }

   private void createFooter(BasicInformation basicInformation){
       if(basicInformation.getStoreName().equals(STORE_NM_ITAKO) ||
               basicInformation.getStoreName().equals(STORE_NM_YUKARI) ){
           System.out.println(HR);
           SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日　hh時mm分ss秒");
           System.out.println(sdf.format(basicInformation.getPurchaseTime()));
       }
   }

   private String lineFormatGoodsRow(String gName, BigDecimal gPrice){
       final int gNameLen = 20;
       final int gPirceLen = 6;

       int diffStrLen = 0;
       for(char c : gName.toCharArray()){
           if(String.valueOf(c).getBytes().length > 1){
               //全角の場合
               diffStrLen++;
           }
       }

       return String.format(" %-"+ (gNameLen - diffStrLen) +"s %" + gPirceLen + "d円 ",gName,gPrice.intValue());

   }

   private String lineFormatGoodsRowYenSign(String gName, BigDecimal gPrice){
       final int gNameLen = 20;
       final int gPriceLen = 6;

       int diffStrLen = 0;
       for(char c : gName.toCharArray()){
           if(String.valueOf(c).getBytes().length > 1){
               //全角の場合
               diffStrLen++;
           }
       }

       return String.format(" %-"+ (gNameLen - diffStrLen) +"s \\%," + gPriceLen + "d ",gName,gPrice.intValue());
   }

   private String lineFormatGoodsRowNoSign(String gName, BigDecimal gPrice){
       final int gNameLen = 20;
       final int gPriceLen = 6;

       int diffStrLen = 0;
       for(char c : gName.toCharArray()){
           if(String.valueOf(c).getBytes().length > 1){
               //全角の場合
               diffStrLen++;
           }
       }

       return String.format(" %-"+ (gNameLen - diffStrLen) +"s  %," + gPriceLen + "d ",gName,gPrice.intValue());
   }

   private String lineFormatCenter(String orgStr){
       final int strLen = 31;

       int diffStrLen = 0;
       for(char c : orgStr.toCharArray()){
           if(String.valueOf(c).getBytes().length > 1){
               //全角の場合
               diffStrLen++;
           }
       }

       int preSpCnt = (strLen - orgStr.length() - diffStrLen) / 2;
       //String displayStr = IntStream.range(0, preSpCnt).mapToObj(i -> " ").collect(Collectors.joining("", "", orgStr));
       StringBuffer displayStr = new StringBuffer();
       for(int i = 0 ; i < preSpCnt; i++) {
           displayStr.append(" ");
       }
       displayStr.append(orgStr);

       return String.format("%-"+ (strLen - diffStrLen) +"s",displayStr);
   }
}

3.3 BasicInformation　ー第４章ソースコードー

　一部項目追加。

package Basket;

import java.math.BigDecimal;
import java.util.Date;

public class BasicInformation {

   private String storeName = null;
   private String branchName = null;
   private Date purchaseTime = null;
   private BigDecimal paymentAmount = null;

   //追加
   private String phoneNumber = null;
   private String address = null;

   public BasicInformation(String storeName, String branchName, Date purchaseTime, String paymentAmount,String phoneNumber,String address){
       setStoreName(storeName);
       setBranchName(branchName);
       setPurchaseTime(purchaseTime);
       setPaymentAmount(paymentAmount);
       setPhoneNumber(phoneNumber);
       setAddress(address);
   }

   public String getStoreName() {
       return storeName;
   }

   public void setStoreName(String storeName) {
       this.storeName = storeName;
   }

   public String getBranchName() {
       return branchName;
   }

   public void setBranchName(String branchName) {
       this.branchName = branchName;
   }

   public Date getPurchaseTime() {
       return purchaseTime;
   }

   public void setPurchaseTime(Date purchaseTime) {
       this.purchaseTime = purchaseTime;
   }

   public BigDecimal getPaymentAmount() {
       return paymentAmount;
   }

   public void setPaymentAmount(BigDecimal paymentAmount) {
       this.paymentAmount = paymentAmount;
   }

   public void setPaymentAmount(String paymentAmount) {
       this.paymentAmount = new BigDecimal(paymentAmount);
   }

   public String getPhoneNumber() {
       return phoneNumber;
   }

   public void setPhoneNumber(String phoneNumber) {
       this.phoneNumber = phoneNumber;
   }

   public String getAddress() {
       return address;
   }

   public void setAddress(String address) {
       this.address = address;
   }


}

3.4 PurchasedGoods　ー第４章ソースコードー

　前章から特に変更無し。

package Basket;

import java.math.BigDecimal;

public class PurchasedGoods {
   private String goodsName = null;

   private BigDecimal price = null;

   public PurchasedGoods(String goodsName, String price){
       this.goodsName = goodsName;
       this.price = new BigDecimal(price);
   }

   public String getGoodsName() {
       return goodsName;
   }

   public BigDecimal getPrice() {
       return price;
   }

}

4.1 Main　ー第５章ソースコードー

　前章から変更無いため省略。

4.2 ReceiptController　ー第５章ソースコードー

　ポリモーフィズム対応版。

package receipt.oop;

import Basket.BasicInformation;
import Basket.PurchasedGoods;

import java.util.List;

public class ReceiptController {
  public static final String STORE_NM_ITAKO = "イタコ食堂";
  public static final String STORE_NM_YUKARI = "ゆかり書房";
  public static final String STORE_NM_MAKI = "マキマキマーケット";

  public void execute(BasicInformation basicInformation, List<PurchasedGoods> purchasedGoodsList){
      try {
          IReceiptCreator creator = getReceiptCreator(basicInformation);

          //header
          creator.createHeader(basicInformation);

          //contents
          creator.createContents(basicInformation, purchasedGoodsList);

          //footer
          creator.createFooter(basicInformation);

      } catch (Exception e) {
          e.printStackTrace();
      }

  }

  private IReceiptCreator getReceiptCreator(BasicInformation bi) throws Exception {
      IReceiptCreator creator = null;
      if(bi.getStoreName().equals(STORE_NM_ITAKO)){
          creator = new ReceiptCreatorItako();
      }else if(bi.getStoreName().equals(STORE_NM_YUKARI)){
          creator = new ReceiptCreatorYukari();
      }else if(bi.getStoreName().equals(STORE_NM_MAKI)){
          creator = new ReceiptCreatorMaki();
      }else{
          System.out.println("想定外の値：" + bi.getStoreName());
          throw new Exception();
      }

      return creator;

  }
}

4.3 IReceiptCreator　ー第５章ソースコードー

　　インターフェース。

package receipt.oop;

import Basket.BasicInformation;
import Basket.PurchasedGoods;

import java.util.List;

public interface IReceiptCreator {
  public final static String HR =  "===============================";
  public final static String HR2 = " ----------------------------- ";

  public void createHeader(BasicInformation basicInformation);

  public void createContents(BasicInformation basicInformation, List<PurchasedGoods> purchasedGoodsList);

  public void createFooter(BasicInformation basicInformation);

}

4.4 ReceiptCreatorItako　ー第５章ソースコードー

　イタコ食堂向けクラス。

package receipt.oop;

import Basket.BasicInformation;
import Basket.PurchasedGoods;

import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.List;

public class ReceiptCreatorItako implements IReceiptCreator{

  public void createHeader(BasicInformation basicInformation){
      System.out.println();
      System.out.println(lineFormatCenter(basicInformation.getStoreName()));
      System.out.println(basicInformation.getBranchName());
      System.out.println();
      System.out.println(HR);
  }

  public void createContents(BasicInformation basicInformation, List<PurchasedGoods> purchasedGoodsList){
      String printStr = null;
      BigDecimal sum = new BigDecimal("0");
      for(PurchasedGoods goods : purchasedGoodsList){
          sum = sum.add(goods.getPrice());
          printStr = lineFormatGoodsRow(goods.getGoodsName(), goods.getPrice());
          System.out.println(printStr);
      }
      System.out.println(HR2);
      printStr = lineFormatGoodsRow("合計", sum);
      System.out.println(printStr);

      System.out.println(HR2);
      basicInformation.getPaymentAmount().intValue();
      printStr = lineFormatGoodsRow("お預り", basicInformation.getPaymentAmount());
      System.out.println(printStr);

      BigDecimal change = basicInformation.getPaymentAmount().subtract(sum);
      printStr = lineFormatGoodsRow("お釣り", change);
      System.out.println(printStr);
  }

  public void createFooter(BasicInformation basicInformation){
      System.out.println(HR);
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日　hh時mm分ss秒");
      System.out.println(sdf.format(basicInformation.getPurchaseTime()));
  }

  private String lineFormatGoodsRow(String gName, BigDecimal gPrice){
      final int gNameLen = 20;
      final int gPriceLen = 6;

      int diffStrLen = 0;
      for(char c : gName.toCharArray()){
          if(String.valueOf(c).getBytes().length > 1){
              //全角の場合
              diffStrLen++;
          }
      }

      return String.format(" %-"+ (gNameLen - diffStrLen) +"s %" + gPriceLen + "d円 ",gName,gPrice.intValue());

  }

  private String lineFormatCenter(String orgStr){
      final int strLen = 31;

      int diffStrLen = 0;
      for(char c : orgStr.toCharArray()){
          if(String.valueOf(c).getBytes().length > 1){
              //全角の場合
              diffStrLen++;
          }
      }

      int preSpCnt = (strLen - orgStr.length() - diffStrLen) / 2;
      //String displayStr = IntStream.range(0, preSpCnt).mapToObj(i -> " ").collect(Collectors.joining("", "", orgStr));
      StringBuffer displayStr = new StringBuffer();
      for(int i = 0 ; i < preSpCnt; i++) {
          displayStr.append(" ");
      }
      displayStr.append(orgStr);

      return String.format("%-"+ (strLen - diffStrLen) +"s",displayStr);
  }

}

4.5 ReceiptCreatorYukari　ー第５章ソースコードー

　ゆかり書房向けクラス。

package receipt.oop;

import Basket.BasicInformation;
import Basket.PurchasedGoods;

import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.List;

public class ReceiptCreatorYukari implements IReceiptCreator{

  public void createHeader(BasicInformation basicInformation){
      System.out.println();
      System.out.println(lineFormatCenter(basicInformation.getStoreName()));
      System.out.println();
      System.out.println(HR);
  }

  public void createContents(BasicInformation basicInformation, List<PurchasedGoods> purchasedGoodsList){
      String printStr = null;
      BigDecimal sum = new BigDecimal("0");
      for(PurchasedGoods goods : purchasedGoodsList){
          sum = sum.add(goods.getPrice());
          printStr = lineFormatGoodsRowYenSign(goods.getGoodsName(), goods.getPrice());
          System.out.println(printStr);
      }
      System.out.println(HR2);
      printStr = lineFormatGoodsRowYenSign("合計", sum);
      System.out.println(printStr);

      System.out.println(HR2);
      basicInformation.getPaymentAmount().intValue();
      printStr = lineFormatGoodsRowYenSign("お預り", basicInformation.getPaymentAmount());
      System.out.println(printStr);

      BigDecimal change = basicInformation.getPaymentAmount().subtract(sum);
      printStr = lineFormatGoodsRowYenSign("お釣り", change);
      System.out.println(printStr);
  }

  public void createFooter(BasicInformation basicInformation){
      System.out.println(HR);
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日　hh時mm分ss秒");
      System.out.println(sdf.format(basicInformation.getPurchaseTime()));
  }

  private String lineFormatGoodsRowYenSign(String gName, BigDecimal gPrice){
      final int gNameLen = 20;
      final int gPriceLen = 6;

      int diffStrLen = 0;
      for(char c : gName.toCharArray()){
          if(String.valueOf(c).getBytes().length > 1){
              //全角の場合
              diffStrLen++;
          }
      }

      return String.format(" %-"+ (gNameLen - diffStrLen) +"s \\%," + gPriceLen + "d ",gName,gPrice.intValue());
  }

  private String lineFormatCenter(String orgStr){
      final int strLen = 31;

      int diffStrLen = 0;
      for(char c : orgStr.toCharArray()){
          if(String.valueOf(c).getBytes().length > 1){
              //全角の場合
              diffStrLen++;
          }
      }

      int preSpCnt = (strLen - orgStr.length() - diffStrLen) / 2;
      //String displayStr = IntStream.range(0, preSpCnt).mapToObj(i -> " ").collect(Collectors.joining("", "", orgStr));
      StringBuffer displayStr = new StringBuffer();
      for(int i = 0 ; i < preSpCnt; i++) {
          displayStr.append(" ");
      }
      displayStr.append(orgStr);

      return String.format("%-"+ (strLen - diffStrLen) +"s",displayStr);
  }

}

4.6 ReceiptCreatorMaki　ー第５章ソースコードー

　マキマキマーケット向けクラス。

package receipt.oop;

import Basket.BasicInformation;
import Basket.PurchasedGoods;

import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.List;

public class ReceiptCreatorMaki implements IReceiptCreator{

  public void createHeader(BasicInformation basicInformation){
      System.out.println();
      System.out.println(lineFormatCenter(basicInformation.getStoreName()));
      System.out.println(basicInformation.getBranchName());
      System.out.println("  " + basicInformation.getAddress());
      System.out.println("  " + basicInformation.getPhoneNumber());
      SimpleDateFormat sdf = new SimpleDateFormat("           yyyy/MM/dd　hh:mm:ss");
      System.out.println(sdf.format(basicInformation.getPurchaseTime()));
      System.out.println(HR);
  }

  public void createContents(BasicInformation basicInformation, List<PurchasedGoods> purchasedGoodsList){
      String printStr = null;
      BigDecimal sum = new BigDecimal("0");
      for(PurchasedGoods goods : purchasedGoodsList){
          sum = sum.add(goods.getPrice());
          printStr = lineFormatGoodsRowNoSign(goods.getGoodsName(), goods.getPrice());
          System.out.println(printStr);
      }
      System.out.println(HR2);

      printStr = lineFormatGoodsRowYenSign("合計", sum);
      System.out.println(printStr);

      System.out.println(HR2);
      basicInformation.getPaymentAmount().intValue();
      printStr = lineFormatGoodsRowYenSign("お預り", basicInformation.getPaymentAmount());
      System.out.println(printStr);

      BigDecimal change = basicInformation.getPaymentAmount().subtract(sum);
      printStr = lineFormatGoodsRowYenSign("お釣り", change);
      System.out.println(printStr);
  }

  public void createFooter(BasicInformation basicInformation){
  }

  private String lineFormatGoodsRowYenSign(String gName, BigDecimal gPrice){
      final int gNameLen = 20;
      final int gPriceLen = 6;

      int diffStrLen = 0;
      for(char c : gName.toCharArray()){
          if(String.valueOf(c).getBytes().length > 1){
              //全角の場合
              diffStrLen++;
          }
      }

      return String.format(" %-"+ (gNameLen - diffStrLen) +"s \\%," + gPriceLen + "d ",gName,gPrice.intValue());
  }

  private String lineFormatGoodsRowNoSign(String gName, BigDecimal gPrice){
      final int gNameLen = 20;
      final int gPriceLen = 6;

      int diffStrLen = 0;
      for(char c : gName.toCharArray()){
          if(String.valueOf(c).getBytes().length > 1){
              //全角の場合
              diffStrLen++;
          }
      }

      return String.format(" %-"+ (gNameLen - diffStrLen) +"s  %," + gPriceLen + "d ",gName,gPrice.intValue());
  }

  private String lineFormatCenter(String orgStr){
      final int strLen = 31;

      int diffStrLen = 0;
      for(char c : orgStr.toCharArray()){
          if(String.valueOf(c).getBytes().length > 1){
              //全角の場合
              diffStrLen++;
          }
      }

      int preSpCnt = (strLen - orgStr.length() - diffStrLen) / 2;
      //String displayStr = IntStream.range(0, preSpCnt).mapToObj(i -> " ").collect(Collectors.joining("", "", orgStr));
      StringBuffer displayStr = new StringBuffer();
      for(int i = 0 ; i < preSpCnt; i++) {
          displayStr.append(" ");
      }
      displayStr.append(orgStr);

      return String.format("%-"+ (strLen - diffStrLen) +"s",displayStr);
  }

}

4.7 BasicInformation　ー第５章ソースコードー

　前章から変更無いため省略。

4.8 PurchasedGoods　ー第５章ソースコードー

　前章から変更無いため省略。

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ざっくりオブジェクト指向プログラミング解説：サンプルコード＃４実践編②

3.1 Main ー第４章ソースコードー

3.2 ReceiptControllerVer3 ー第４章ソースコードー

3.3 BasicInformation ー第４章ソースコードー

3.4 PurchasedGoods ー第４章ソースコードー

4.1 Main ー第５章ソースコードー

4.2 ReceiptController ー第５章ソースコードー

4.3 IReceiptCreator ー第５章ソースコードー

4.4 ReceiptCreatorItako ー第５章ソースコードー

4.5 ReceiptCreatorYukari ー第５章ソースコードー

4.6 ReceiptCreatorMaki ー第５章ソースコードー

4.7 BasicInformation ー第５章ソースコードー

4.8 PurchasedGoods ー第５章ソースコードー

3.1 Main　ー第４章ソースコードー

3.2 ReceiptControllerVer3 　ー第４章ソースコードー

3.3 BasicInformation　ー第４章ソースコードー

3.4 PurchasedGoods　ー第４章ソースコードー

4.1 Main　ー第５章ソースコードー

4.2 ReceiptController　ー第５章ソースコードー

4.3 IReceiptCreator　ー第５章ソースコードー

4.4 ReceiptCreatorItako　ー第５章ソースコードー

4.5 ReceiptCreatorYukari　ー第５章ソースコードー

4.6 ReceiptCreatorMaki　ー第５章ソースコードー

4.7 BasicInformation　ー第５章ソースコードー

4.8 PurchasedGoods　ー第５章ソースコードー