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這篇文章將為大家詳細講解有關java實現銀行管理系統的方法，小編覺得挺實用的，因此分享給大家做個參考，希望大家閱讀完這篇文章后可以有所收獲。
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;//賬戶余額
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 password, String name, String personId,
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;
}
//開戶函數
public Account openAccount() {
return null;
}
//顯示開戶成功的信息函數
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);
}
//登入函數
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,賬戶余額為" + 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];// 賬戶對象數組
private int accountNum = 0;// 賬戶數量
private int type;// 賬戶類型
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() {
}
// 主界面
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、創建賬戶**************");
System.out.println("******2、登入賬戶**************");
}
//功能選擇函數
public void select() {
int select = sc.nextInt();
switch(select) {
case 1 : this.openAccount();
break;
case 2 : this.enter();
break;
}
}
// 開戶函數
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("請輸入您的賬戶類型");
System.out.println("1、存儲卡 2、信用卡");
type = sc.nextInt();
switch (type) {
case 1:
account[accountNum] = new LoanSavingAccount(100000 + j, password, name,
personId, email, 0, 0); // 創建存儲卡賬戶對象,初始余額為0，默認貸款金額為0元
account[accountNum].show();//調用顯示賬戶信息函數
System.out.println("卡類型為：存儲卡");
accountNum++;
j++;
return account[accountNum];
case 2:
account[accountNum] = new LoanCreditAccount(100000 + j, password, name,
personId, email, 0, 0, 5000); // 創建信用卡賬戶對象，多一個透資屬性,初始透資金額為5000元
account[accountNum].show();//調用顯示賬戶信息函數a
System.out.println("卡類型為： 信用卡");
accountNum++;
j++;
return account[accountNum];
}
return null;
}
// System.out.println("恭喜您，創建賬號成功啦！！！" + "您的賬號名為"+ account.getId() +
// "您的賬戶類型為" + type);
// return account;
// 登入函數
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("未注冊賬戶，請先注冊！");
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);//調用取款方法
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);
}
//計算銀行余額總數方法
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("成功調用了貸款方法");
}
}
//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, String password, String name, String personId,String email, double balance, double ceiling, double overdraft) {
super(id,password,name, personId, email, 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,賬戶余額為" + 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,您的余額為" + super.getBalance());
}else System.out.println("對不起您的余額和透支額度不足！");
}
// @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();//獲取用戶總額
}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, String password, String name, String personId,String email, double balance, double ceiling,double overdraft) {
super(id, password, name, personId, email, balance, 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);//更新余額值
System.out.println("您現在的余額為： " + 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. 還款金額小于等于貸款金額 2.還款金額小于所剩余額 3.還款金額大于0
if (super.getBalance() >= money && money <= super.getCeiling() && money >= 0) {
super.setBalance(super.getBalance() - money); //更新余額
super.setCeiling(super.getCeiling() - money);
System.out.println(" 您現在的余額為" + 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，您的賬戶余額不足或者輸入的還款額度超出范圍！");
}
}
public void getLoan() {//獲取用戶貸款總額
double savSum = 0;
};
}package Account;
import java.util.Scanner;
import com_Day_7_11.SavingAccount;
//存儲卡子類
public class LoanSavingAccount extends SavingAccount implements General{
Scanner sc = new Scanner(System.in);
public LoanSavingAccount(int id, String password, String name,
String personId, String email, double balance, double ceiling) {
super(id, password, name, personId, email, balance, 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);//更新余額值
System.out.println("您現在的余額為： " + 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. 還款金額小于等于貸款金額 2.還款金額小于所剩余額 3.還款金額大于0
if (super.getBalance() >= money && money <= super.getCeiling() && money >= 0) {
super.setBalance(super.getBalance() - money); //更新余額
super.setCeiling(super.getCeiling() - money);
System.out.println(" 您現在的余額為" + 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，您的賬戶余額不足或者輸入的還款額度超出范圍！");
}
}
}主界面測試函數
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();//調用界面函數
int select = sc.nextInt();
switch(select) {
case 1: b.openAccount();//創建賬戶
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;
}
}
}
}關于java實現銀行管理系統的方法就分享到這里了，希望以上內容可以對大家有一定的幫助，可以學到更多知識。如果覺得文章不錯，可以把它分享出去讓更多的人看到。
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