java/코드 리뷰
16. characterstream- (11) ReaderDemo ( 도서 관리 시스템 )
Astaroth아스
2020. 4. 27. 16:48
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package characterstream;
public class Book {
private int no;
private String title;
private String writer;
private String publisher;
private int price;
public Book() {
}
public Book(int no, String title, String writer, String publisher, int price) {
super();
this.no = no;
this.title = title;
this.writer = writer;
this.publisher = publisher;
this.price = price;
}
public int getNo() {
return no;
}
public void setNo(int no) {
this.no = no;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getWriter() {
return writer;
}
public void setWriter(String writer) {
this.writer = writer;
}
public String getPublisher() {
return publisher;
}
public void setPublisher(String publisher) {
this.publisher = publisher;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
}
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package characterstream;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
public class ReaderDemo1 {
public static void main(String[] args) throws IOException {
FileReader fr = new FileReader("c:/files/data.txt");
BufferedReader br = new BufferedReader(fr);
// String text1 = br.readLine();
// String text2 = br.readLine();
// String text3 = br.readLine();
// String text4 = br.readLine();
// String text5 = br.readLine();
// String text6 = br.readLine();
//
// System.out.println(text1);
// System.out.println(text2);
// System.out.println(text3);
// System.out.println(text4);
// System.out.println(text5);
// System.out.println(text6);
String text = null;
int totalOrderPrice = 0;
while ((text = br.readLine()) != null) {
if (!text.isEmpty()) {
// System.out.println(text); // 위의 text들을 한 줄로 요약
String[] items = text.split(",");
// System.out.println(items[4]); // 4번째 가격만 출력
int price = Integer.parseInt(items[4]);
totalOrderPrice += price;
}
}
System.out.println("총 구매금액 : " + totalOrderPrice);
br.close();
}
}
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package characterstream;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class ReaderDemo2 {
public static void main(String[] args) throws IOException {
Scanner sc = new Scanner(System.in);
// data.txt의 도서 정보 읽어서 Book 객체에 담고, ArrayList에 Book 객체 저장
List<Book> books = new ArrayList<Book>();
FileInputStream fis = new FileInputStream("c:/files/data.txt");
InputStreamReader isr = new InputStreamReader(fis, "ms949");
BufferedReader reader = new BufferedReader(isr);
String text = null;
while ((text = reader.readLine()) != null) {
if (!text.isEmpty()) {
String[] items = text.split(",");
int no = Integer.parseInt(items[0]);
String title = items[1];
String writer = items[2];
String publisher = items[3];
int price = Integer.parseInt(items[4]);
Book book = new Book();
book.setNo(no);
book.setTitle(title);
book.setWriter(writer);
book.setPublisher(publisher);
book.setPrice(price);
books.add(book);
}
}
reader.close();
while (true) {
System.out.println("========================================");
System.out.println("1.도서내역조회 2.상세조회 0.종료");
System.out.println("========================================");
System.out.print("메뉴 번호를 입력하세요 : ");
int menuNo = sc.nextInt();
System.out.println();
if (menuNo == 1) {
System.out.println("[도서내역조회]");
System.out.printf("%-3s %-30s %-15s %-7s\n", "번호", "제목", "저자", "가격");
for (Book book : books) {
int no = book.getNo();
String title = book.getTitle();
String writer = book.getWriter();
int price = book.getPrice();
System.out.printf("%-3s %-30s %-15s %-7s\n", no, title, writer, price);
}
System.out.println();
} else if (menuNo == 2) {
System.out.println("[도서정보 보기]");
System.out.print("책번호를 입력하세요 : ");
int bookNo = sc.nextInt();
System.out.println();
for (Book book : books) {
if (book.getNo() == bookNo) {
System.out.println("책번호 : " + book.getNo());
System.out.println("제목 : " + book.getTitle());
System.out.println("저자 : " + book.getWriter());
System.out.println("출판사 : " + book.getPublisher());
System.out.println("가격 : " + book.getNo());
}
}
System.out.println();
} else if (menuNo == 0) {
break;
}
}
sc.close();
}
}
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