java實現簡單銀行管理系統
阿新 • • 發佈:2020-01-07
本文例項為大家分享了java銀行管理系統的具體程式碼,供大家參考,具體內容如下
賬戶類
package Account; public abstract class Account { private int id;//賬號 private String password;//密碼 private String name;//姓名 private String personId;//身份證號碼 private String email;//郵箱 private double ceiling;//貸款屬性 private static double balance;//賬戶餘額 public Account() {} public Account(int id,String password,String name,String personId,String email,double balance,double ceiling) { super(); this.id = id; this.password = password; this.name = name; this.personId = personId; this.email = email; this.balance = balance; this.ceiling = ceiling; } public Account(int id,String email) { super(); this.id = id; this.password = password; this.name = name; this.personId = personId; this.email = email; } public Account(int id,String password) { this.id =id; this.password = password; } //開戶函式 public Account openAccount() { return null; } //顯示開戶成功的資訊函式 public void show() { System.out.println("賬戶ID為 : " + id + "密碼為: " + password + "姓名為: " + name + "身份證號碼為: " + personId + "郵箱為: " + email); } //登入函式 public void enter() { } //取款方法 為抽象方法 public abstract void deposit(double money); //存款方法 public static void withdraw(double money) { balance = balance + money; System.out.println("您已經存入" + money + "元,賬戶餘額為" + balance ); } // public abstract void requestLoan(double money); public double getCeiling() { return ceiling; } public void setCeiling(double ceiling) { this.ceiling = ceiling; } public int getId() { return id; } public void setId( int id) { this.id = id; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPersonId() { return personId; } public void setPersonId(String personId) { this.personId = personId; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public double getBalance() { return balance; } public void setBalance(double balance) { this.balance = balance; } }
Bank類
package Account; import java.util.Scanner; public class Bank { int i;// 賬戶編號 private Account[] account = new Account[100];// 賬戶物件陣列 private int accountNum = 0;// 賬戶數量 private int type;// 賬戶型別 private String password1;// 確認密碼 int id = 100000;//第一個開戶賬號 int j = 1;//常量控制開戶賬號每次+1 Scanner sc = new Scanner(System.in); int insert; public Bank() { } // 主介面 public void mainView() { System.out.println("******歡迎登入銀行管理系統********"); System.out.println("******請選擇業務***************"); System.out.println("******1、建立賬戶**************"); System.out.println("******2、登入賬戶**************"); } //功能選擇函式 public void select() { int select = sc.nextInt(); switch(select) { case 1 : this.openAccount(); break; case 2 : this.enter(); break; } } // 開戶函式 public Account openAccount() { System.out.println("請輸入您的姓名"); String name = sc.next(); // System.out.println("請輸入您的卡號"); // int id = sc.nextInt(); System.out.println("請輸入您的密碼"); String password = sc.next(); System.out.println("請再次確認您的密碼"); String password1 = sc.next(); while (!password1.equals(password)) { System.out.println("對不起,兩次輸入的密碼不一致,請重新輸入"); System.out.println("請重新輸入您的密碼"); password = sc.next(); System.out.println("請再次確認您的密碼"); password1 = sc.next(); } System.out.println("請輸入您的身份證號碼"); String personId = sc.next(); System.out.println("請輸入您的郵箱"); String email = sc.next(); System.out.println("請輸入您的賬戶型別"); System.out.println("1、儲存卡 2、信用卡"); type = sc.nextInt(); switch (type) { case 1: account[accountNum] = new LoanSavingAccount(100000 + j,password,name,personId,email,0); // 建立儲存卡賬戶物件,初始餘額為0,預設貸款金額為0元 account[accountNum].show();//呼叫顯示賬戶資訊函式 System.out.println("卡型別為:儲存卡"); accountNum++; j++; return account[accountNum]; case 2: account[accountNum] = new LoanCreditAccount(100000 + j,5000); // 建立信用卡賬戶物件,多一個透資屬性,初始透資金額為5000元 account[accountNum].show();//呼叫顯示賬戶資訊函式a System.out.println("卡型別為: 信用卡"); accountNum++; j++; return account[accountNum]; } return null; } // System.out.println("恭喜您,建立賬號成功啦!!!" + "您的賬號名為"+ account.getId() + // "您的賬戶型別為" + type); // return account; // 登入函式 public Account enter() { System.out.println("請輸入您的銀行卡號"); int id = sc.nextInt(); System.out.println("請輸入您的密碼"); String password = sc.next(); if (accountNum == 0) { System.out.println("未註冊賬戶,請先註冊!"); this.openAccount(); this.mainView(); this.select(); } boolean flag = false; for (i = 0; i < accountNum; i++) { if (id == account[i].getId() && password.equals(account[i].getPassword())) {//判斷Id和輸入的賬戶密碼是否一致 flag = true; break; } } if (!flag) { System.out.println("登入失敗!!!"); } if (flag) { System.out.println("登入成功!!!!"); do { System.out.println("請選擇業務"); System.out.println("******1、存款*****************"); System.out.println("******2、取款*****************"); System.out.println("******3、貸款*****************"); System.out.println("******4、還款*****************"); System.out.println("******3、按任意鍵退出*************"); insert = sc.nextInt(); switch(insert) { case 1 : System.out.println("******請輸入存款金額*****************"); int money = sc.nextInt(); account[i].withdraw(money); break; case 2: System.out.println("******請輸入取款金額*****************"); money = sc.nextInt(); account[i].deposit(money);//呼叫取款方法 break; case 3: judge(); break; case 4: repay(); break; } } while(insert == 1 || insert == 2 || insert == 3 || insert == 4); } return account[i]; } //存款方法 public void withdraw() { System.out.println("請輸入存款金額"); int money = sc.nextInt(); account[i].withdraw(money); } //取款方法 public void deposit() { System.out.println("請輸入取款金額"); int money = sc.nextInt(); account[i].deposit(200); } //計算銀行餘額總數方法 public void Accountsum() { double savSum = 0; for (int i = 0; i < accountNum; i++) { savSum += account[i].getBalance(); } } //判斷是LoanSavingAccount 類還是LoacCreditAccount //貸款方法 public void judge() { System.out.println("******請輸入貸款金額*****************"); int money = sc.nextInt(); if (account[accountNum - 1] instanceof LoanSavingAccount) { LoanSavingAccount a = (LoanSavingAccount) account[accountNum - 1]; a.requestLoan(money); }else { LoanCreditAccount b = (LoanCreditAccount) account[accountNum -1 ]; b.requestLoan(money); System.out.println("成功呼叫了貸款方法"); } } //還款方法 public void repay() { System.out.println("******請輸入還款金額*****************"); int money = sc.nextInt(); if (account[accountNum - 1] instanceof LoanSavingAccount) { // System.out.println("判斷過了1"); LoanSavingAccount a = (LoanSavingAccount) account[accountNum - 1]; a.payLoan(money); }else { // System.out.println("判斷過了2"); LoanCreditAccount b1 = (LoanCreditAccount) account[accountNum - 1]; b1.payLoan(money); } } }
信用卡類
package Account; public class CreditAccount extends Account { //信用卡 private double overdraft;//透資屬性 public CreditAccount() {} public CreditAccount(int id,double ceiling,double overdraft) { super(id,balance,ceiling); this.overdraft = overdraft;//多出一個透資屬性 } // public void withdraw(double money) { // super.setBalance(super.getBalance() + money); // System.out.println("你的卡號為" + super.getId() +"的卡,您已經存入" + money + "元,賬戶餘額為" + super.getBalance() ); // } public void deposit(double money) {//信用卡取款方法 if ((super.getBalance() + overdraft) >= money) { super.setBalance(super.getBalance() - money) ; System.out.println("您取了" + money + "錢,您的餘額為" + super.getBalance()); }else System.out.println("對不起您的餘額和透支額度不足!"); } // @Override // public void requestLoan() { // // TODO Auto-generated method stub // // } } package Account; public interface General { void requestLoan(double money);//貸款方法 void payLoan(double money);//還款 // void getLoan();//獲取使用者總額 }
信用卡子類
package Account; import java.util.Scanner; public class LoanCreditAccount extends CreditAccount implements General { Scanner sc = new Scanner(System.in); public LoanCreditAccount(){} public LoanCreditAccount(int id,ceiling,overdraft); } public void requestLoan(double money) {//貸款方法 if ( 0 <= money&& money <= 10000) {//貸款上限為10000 System.out.println("貸款成功,您的貸款金額為: " + money); System.out.println("您還能貸款的金額為: " + (10000 - money)); super.setCeiling(money);//把貸款的錢傳給貸款屬性 super.setBalance(super.getBalance() + money);//更新餘額值 System.out.println("您現在的餘額為: " + super.getBalance()); }else { System.out.println("對不起您的額度不夠,貸款失敗!"); } } public void payLoan(double money) {//還款 //三個判斷條件:1. 還款金額小於等於貸款金額 2.還款金額小於所剩餘額 3.還款金額大於0 if (super.getBalance() >= money && money <= super.getCeiling() && money >= 0) { super.setBalance(super.getBalance() - money); //更新餘額 super.setCeiling(super.getCeiling() - money); System.out.println(" 您現在的餘額為" + super.getBalance()); if (super.getCeiling() ==0) { System.out.println("您已經全部還清!!謝謝光臨!!"); }else { System.out.println("您已經還了" + money +"您還需要還" + super.getCeiling() ); } }else { System.out.println("對不起,您的賬戶餘額不足或者輸入的還款額度超出範圍!"); } } public void getLoan() {//獲取使用者貸款總額 double savSum = 0; }; }
package Account; import java.util.Scanner; import com_Day_7_11.SavingAccount; //儲存卡子類 public class LoanSavingAccount extends SavingAccount implements General{ Scanner sc = new Scanner(System.in); public LoanSavingAccount(int id,double ceiling) { super(id,ceiling); } public void requestLoan(double money) {//貸款方法 if ( 0 <= money&& money <= 10000) {//貸款上限為10000 System.out.println("貸款成功,您的貸款金額為: " + money); System.out.println("您還能貸款的金額為: " + (10000 - money)); super.setCeiling(money);//把貸款的錢傳給貸款屬性 super.setBalance(super.getBalance() + money);//更新餘額值 System.out.println("您現在的餘額為: " + super.getBalance()); }else { System.out.println("對不起您的額度不夠,貸款失敗!"); } } public void payLoan(double money) {//還款 //三個判斷條件:1. 還款金額小於等於貸款金額 2.還款金額小於所剩餘額 3.還款金額大於0 if (super.getBalance() >= money && money <= super.getCeiling() && money >= 0) { super.setBalance(super.getBalance() - money); //更新餘額 super.setCeiling(super.getCeiling() - money); System.out.println(" 您現在的餘額為" + super.getBalance()); if (super.getCeiling() ==0) { System.out.println("您已經全部還清!!謝謝光臨!!"); }else { System.out.println("您已經還了" + money +"您還需要還" + super.getCeiling() ); } }else { System.out.println("對不起,您的賬戶餘額不足或者輸入的還款額度超出範圍!"); } } }
主介面測試函式
package Account; import java.util.Scanner; public class Text { public static void main(String[] args) { Scanner sc = new Scanner(System.in); Bank b = new Bank(); while (true) { b.mainView();//呼叫介面函式 int select = sc.nextInt(); switch(select) { case 1: b.openAccount();//建立賬戶 break; case 2: b.enter();//登入 break; default: System.out.println("選擇業務異常,請重新選擇"); break; } System.out.println("是否繼續選擇其他業務"); System.out.println("退出請按 0"); System.out.println("繼續選擇其他業務請按 1"); select = sc.nextInt(); if (select == 0) { break; } } } }
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