1013 과제 (금전 출납부 만들기)

[서하늘]

RUN

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package t6_Bank;   import java.util.Scanner;   public class BankRun {     public static void main(String[] args) {         Scanner scanner = new Scanner(System.in);         BankService service = new BankService();         boolean run = true;         int number;                  while(run) {             System.out.println("\n****원하시는 작업을 선택하세요 ****");             System.out.print("1.입력 2.수입내역 3.지출내역 4.총내역 5.수정 6.삭제 7.종료 ==> ");             number = scanner.nextInt();             switch (number) {                 case 1: // 입력                     service.input();                     break;                 case 2: // 수입내역조회                     service.suip();                     break;                 case 3: // 지출내역조회                     service.jichul();                     break;                 case 4: // 총내역조회                     service.list();                     break;                 case 5: // 수정                     service.update();                     break;                 case 6: // 삭제                     service.delete();                     break;                 case 7: // 종료                     System.out.println("프로그램을 종료합니다.");                     run = false;                     break;                 default:                     System.out.println("잘못된 값을 입력하였습니다. 다시 입력해 주세요.");                     run = true;             }         }         System.out.println("=======================================");         System.out.println("\t작업 끝!");         scanner.close();     } }   Colored by Color Scripter

cs

VO

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package t6_Bank;   public class BankVO {     private int idx;     private String wDate;     private int suip;     private int jichul;     private String bigo;          public int getIdx() {         return idx;     }     public void setIdx(int idx) {         this.idx = idx;     }     public String getwDate() {         return wDate;     }     public void setwDate(String wDate) {         this.wDate = wDate;     }     public int getSuip() {         return suip;     }     public void setSuip(int suip) {         this.suip = suip;     }     public int getJichul() {         return jichul;     }     public void setJichul(int jichul) {         this.jichul = jichul;     }     public String getBigo() {         return bigo;     }     public void setBigo(String bigo) {         this.bigo = bigo;     }          @Override     public String toString() {         return "BankVO [idx=" + idx + ", wDate=" + wDate + ", suip=" + suip + ", jichul=" + jichul + ", bigo=" + bigo + "]";     } }   Colored by Color Scripter

cs

SERVICE

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package t6_Bank;   import java.util.ArrayList; import java.util.Scanner;   public class BankService {     Scanner scanner = new Scanner(System.in);     BankDAO dao = new BankDAO();     BankVO vo = new BankVO();       public void input() {         while(true) {             System.out.println("입력할 내용을 선택하세요.");             System.out.print("1:수입  2:지출 [종료:999] ==> ");             int sel = scanner.nextInt();             if(sel == 999) {                 System.out.println("입력을 종료합니다.");                 break;             }             else if(sel < 1 || sel > 2) {                 System.out.println("잘못된 값을 입력하였습니다. 다시 입력해 주세요.");                 continue;             }             else if(sel == 1) {                 System.out.print("수입 날짜를 입력하세요 : "); vo.setwDate(scanner.next());                 System.out.print("수입 금액을 입력하세요 : "); vo.setSuip(scanner.nextInt()); vo.setJichul(0);                 System.out.print("비고란을 입력하세요 : "); vo.setBigo(scanner.next());             }             else {                 System.out.print("지출 날짜를 입력하세요 : "); vo.setwDate(scanner.next());                 System.out.print("지출 금액을 입력하세요 : "); vo.setJichul(scanner.nextInt()); vo.setSuip(0);                 System.out.print("비고란을 입력하세요 : "); vo.setBigo(scanner.next());             }             dao.input(vo);         }     }       public void suip() {         int suip=0;         ArrayList<BankVO> vos = dao.suiplist();         System.out.println("======================================");         System.out.println("날짜\t       수입금액\t비고\t고유번호");         System.out.println("--------------------------------------");         for(int i=0; i<vos.size(); i++) {             vo=vos.get(i);             System.out.println(vo.getwDate().substring(0,10)+"\t"+vo.getSuip()+"\t"+vo.getBigo()+"\t"+vo.getIdx());             suip += vo.getSuip();         }         System.out.println("======================================");         System.out.println("수입 합계 : "+suip);         System.out.println("======================================");     }       public void jichul() {         int jichul=0;         ArrayList<BankVO> vos = dao.jichullist();         System.out.println("======================================");         System.out.println("날짜\t       지출금액\t비고\t고유번호");         System.out.println("--------------------------------------");         for(int i=0; i<vos.size(); i++) {             vo=vos.get(i);             System.out.println(vo.getwDate().substring(0, 10)+"\t"+vo.getJichul()+"\t"+vo.getBigo()+"\t"+vo.getIdx());             jichul += vo.getJichul();         }         System.out.println("======================================");         System.out.println("지출 합계 : "+jichul);         System.out.println("======================================");     }       public void list() {         int suip=0, jichul=0;         ArrayList<BankVO> vos = dao.list();         System.out.println("================================================");         System.out.println("    날짜\t      수입금액\t지출금액\t비고\t고유번호");         System.out.println("------------------------------------------------");         for(int i=0; i<vos.size(); i++) {             vo=vos.get(i);             System.out.println(vo.getwDate().subSequence(0, 10)+"\t"+vo.getSuip()+"\t"+vo.getJichul()+"\t"+vo.getBigo()+"\t"+vo.getIdx());             suip += vo.getSuip();             jichul += vo.getJichul();         }         System.out.println("================================================");         System.out.println("수입 합계 : "+suip);         System.out.println("지출 합계 : "+jichul);         System.out.println("================================================");     }       public void updateProcess(BankVO vo) {         boolean run = true;         while(run) {             vo = dao.idxSearch(vo.getIdx());             System.out.println();             System.out.println("고유번호 "+vo.getIdx()+"번의 수정할 항목을 선택하세요");             System.out.println(vo.getwDate().substring(0,10)+"      "+vo.getSuip()+"      "+vo.getJichul()+"      "+vo.getBigo());             System.out.print("  1:날짜\t        2:수입     3:지출    4:비고  5:종료  ==> ");             int sel = scanner.nextInt();             switch (sel) {                 case 1:                     System.out.print("수정할 날짜를 입력하세요 ==>"); vo.setwDate(scanner.next());                     System.out.println("--->"+vo.getIdx()+"번 날짜가 수정되었습니다.");                     break;                 case 2:                     System.out.print("수정할 수입을 입력하세요 ==>"); vo.setSuip(scanner.nextInt());                     System.out.println("--->"+vo.getIdx()+"번 수입이 수정되었습니다.");                     break;                 case 3:                     System.out.print("수정할 지출을 입력하세요 ==>"); vo.setJichul(scanner.nextInt());                     System.out.println("--->"+vo.getIdx()+"번 지출이 수정되었습니다.");                     break;                 case 4:                     System.out.print("수정할 비고를 입력하세요 ==>"); vo.setBigo(scanner.next());                     System.out.println("--->"+vo.getIdx()+"번 비고란이 수정되었습니다.");                     break;                 case 5:                     System.out.println("프로그램을 종료합니다.");                     run = false;                     break;                 default:                     System.out.println("잘못된 값을 입력하였습니다. 다시 입력해 주세요.");                     run = true;             }             dao.updateProcess(vo);         }         System.out.println("수정을 종료합니다.");     }     // 고유번호 검색     public void update() {         System.out.print("수정할 내용의 고유번호를 입력하세요 ==> ");         int idx = scanner.nextInt();         BankVO vo = dao.idxSearch(idx);         if(vo.getwDate() == null) System.out.println("---> 검색 된 자료가 없습니다. 다시 입력해 주세요.");         else updateProcess(vo);     }       public void delete() {         System.out.print("삭제 할 내역의 고유번호를 입력하세요 ==> ");         int idx = scanner.nextInt();         int result = dao.delete(idx);         if(result == 1) System.out.println("--->"+idx+"번의 자료가 삭제되었습니다.");         else System.out.println("--->"+idx+"번의 자료가 검색되지 않아 삭제되지 않았습니다.");     } }   Colored by Color Scripter

cs

DAO

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package t6_Bank;   import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList;   public class BankDAO {     Connection conn = null;     PreparedStatement pstmt = null;     ResultSet rs = null;     String sql;     BankVO vo = null; //써먹을때 생성해야함. 객체 통일을 위함.          public BankDAO() {         try {             Class.forName("com.mysql.jdbc.Driver");             String url = "jdbc:mysql://localhost:3306/javaworks";             String user = "javaworks";             String password = "1234";             conn = DriverManager.getConnection(url, user, password);         } catch (ClassNotFoundException e) {             System.out.println("드라이버 연결 실패!");         } catch (SQLException e) {             System.out.println("데이터베이스 연결 실패!");         }     }          public void connClose() {         try {             conn.close();         } catch (SQLException e) {}     }          public void pstmtClose() {         try {             if(pstmt != null) {                 pstmt.close();             }         } catch (SQLException e) {}     }          public void rsClose() {         try {             if(rs != null) {                 rs.close();                 pstmt.close();             }         } catch (SQLException e) {}     }              public void input(BankVO vo) {         try {             sql = "insert into bank values (default,?,?,?,?)";             pstmt = conn.prepareStatement(sql);             pstmt.setString(1, vo.getwDate());             pstmt.setInt(2, vo.getSuip());             pstmt.setInt(3, vo.getJichul());             pstmt.setString(4, vo.getBigo());             pstmt.executeUpdate();             System.out.println("자료가 등록되었습니다.");         } catch (Exception e) {             System.out.println("SQL 에러발생 : "+e.getMessage());         } finally {             pstmtClose();         }     }       public ArrayList<BankVO> suiplist() {         ArrayList<BankVO> vos = new ArrayList<>();         try {             sql = "select wDate,suip,bigo,idx from bank";             pstmt = conn.prepareStatement(sql);             rs = pstmt.executeQuery();             while(rs.next()) {                 BankVO vo = new BankVO();                 vo.setwDate(rs.getString("wDate"));                 vo.setSuip(rs.getInt("suip"));                 vo.setBigo(rs.getString("bigo"));                 vo.setIdx(rs.getInt("idx"));                 vos.add(vo);             }         } catch (SQLException e) {             System.out.println("SQL 에러 발생222 : "+e.getMessage());         } finally {             rsClose();         }         return vos;     }       public ArrayList<BankVO> jichullist() {         ArrayList<BankVO> vos = new ArrayList<>();         try {             sql = "select wDate,jichul,bigo,idx from bank";             pstmt = conn.prepareStatement(sql);             rs = pstmt.executeQuery();             while(rs.next()) {                 BankVO vo = new BankVO();                 vo.setwDate(rs.getString("wDate"));                 vo.setJichul(rs.getInt("jichul"));                 vo.setBigo(rs.getString("bigo"));                 vo.setIdx(rs.getInt("idx"));                 vos.add(vo);             }         } catch (SQLException e) {             System.out.println("SQL 에러 발생 : "+e.getMessage());         } finally {             rsClose();         }         return vos;     }       public ArrayList<BankVO> list() {         ArrayList<BankVO> vos = new ArrayList<>();         try {             sql = "select * from bank";             pstmt = conn.prepareStatement(sql);             rs = pstmt.executeQuery();             while(rs.next()) {                 BankVO vo = new BankVO();                 vo.setIdx(rs.getInt("idx"));                 vo.setwDate(rs.getString("wDate"));                 vo.setSuip(rs.getInt("suip"));                 vo.setJichul(rs.getInt("jichul"));                 vo.setBigo(rs.getString("bigo"));                 vos.add(vo);             }         } catch (SQLException e) {             System.out.println("SQL 에러 발생 : "+e.getMessage());         } finally {             rsClose();         }         return vos;     }       public BankVO idxSearch(int idx) {         vo = new BankVO();         try {             sql="select * from bank where idx=?";             pstmt=conn.prepareStatement(sql);             pstmt.setInt(1, idx);             rs = pstmt.executeQuery();             if(rs.next()) {                 vo.setIdx(rs.getInt("idx"));                 vo.setwDate(rs.getString("wDate"));                 vo.setSuip(rs.getInt("suip"));                 vo.setJichul(rs.getInt("jichul"));                 vo.setBigo(rs.getString("bigo"));             }         } catch (SQLException e) {             System.out.println("SQL 에러 발생 : "+e.getMessage());         }finally {             rsClose();         }         return vo;     }       public void updateProcess(BankVO vo) {         try {             sql ="update bank set wDate=?,suip=?,jichul=?,bigo=? where idx=?";             pstmt = conn.prepareStatement(sql);             pstmt.setString(1, vo.getwDate());             pstmt.setInt(2, vo.getSuip());             pstmt.setInt(3, vo.getJichul());             pstmt.setString(4, vo.getBigo());             pstmt.setInt(5, vo.getIdx());             pstmt.executeUpdate();         } catch (SQLException e) {             System.out.println("SQL 에러 발생 : "+e.getMessage());         }finally {             pstmtClose();         }              }       public int delete(int idx) {         int check = 0;         try {             sql="select * from bank where idx=? ";             pstmt = conn.prepareStatement(sql);             pstmt.setInt(1, idx);             rs = pstmt.executeQuery();             if(rs.next()) {                 rs.close(); //stmt 다시 쓰면 에러나기에 rs닫으며 stmt 같이 닫기.                 sql = "delete from bank where idx=?";                 pstmt = conn.prepareStatement(sql);                 pstmt.setInt(1, idx);                 pstmt.executeUpdate();                 check = 1; //삭제했으면 1로 리턴             }         } catch (SQLException e) {             System.out.println("SQL 에러 발생 : "+e.getMessage());         }finally {             pstmtClose();         }         return check;     } }   Colored by Color Scripter

cs

SQL

결과

[행복]

좋습니다... 시간이 많이 걸리죠?... 조금 연습하면 익숙해 지실겁니다.
깔끔하게 잘 처리하셨네요. 수고하셨어요

[서하늘]

아직은 어색한데, 연습하다보면 익숙해질 것 같습니다! 감사합니다