「java实现银行业务类」java写银行系统
今天给各位分享java实现银行业务类的知识，其中也会对java写银行系统进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
本文目录一览：
- 1、JAVA高手来，题目是：自定义异常类，实现银行的存钱和取钱业务
- 2、用Java编写银行账户存取款业务，急求！！
- 3、求高手用JAVA语言完成 银行业务ATM设计与实现
- 4、用JAVA编写：银行业务UseAccount
- 5、谁帮忙用JAVA设计一个银行类啊！要代码，在下感激不尽
JAVA高手来，题目是：自定义异常类，实现银行的存钱和取钱业务
3个类,开始...
1,
/**
*
* 自定义异常类
*
*/
public class MyException extends Exception {
//验证交易类型正确性
public void TransactionsInfo(){
System.out.println("交易失败,只能输入0或者1");
}
//验证金额正确性
public void amountInfo(){
System.out.println("交易失败,输入金额不能为负数或者字符");
}
}
2,
public class User {
/**
* 用户信息类
*/
private String name; //用户名
private float amount; //用户金额
public User(String name,float amount){
this.name = name;
this.amount = amount;
}
public float getAmount() {
return amount;
}
public void setAmount(float amount) {
this.amount = amount;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
// 交易的方法,需要接受两个参数,一个是代表交易方式(取款,或者存款,),一个代表交易金额
public User Transactions() throws MyException{
System.out.println("请输入您的交易方式.0代表存款,1代表取款");//提示用户交易方式
BufferedReader br1=new BufferedReader(new InputStreamReader(System.in));
BufferedReader br2=new BufferedReader(new InputStreamReader(System.in));
String flag = null;
try {
flag = br1.readLine();
} catch (IOException e) {
e.printStackTrace();
}
if("0".equals(flag)){
}else if("1".equals(flag)){
amount=-amount;//因为1代表取款,所以变成负数
}else{
new MyException().TransactionsInfo(); //打印类型错误
return this;
}
String amountString = null;
try {
amountString = br2.readLine();
} catch (IOException e) {
e.printStackTrace();
}
float amount = 0.0f;
try{
amount = Float.parseFloat(amountString);
}catch(Exception ex){
throw new MyException();
}
this.amount = this.amount+amount;//交易
return this; //返回用户信息
}
}
3,
public class MoneyTest {
/**
* 测试类
* @param args
*/
public static void main(String[] args){
User user = new User("张三",123.4f); //测试用户
System.out.println("用户"+user.getName()+"交易前的金额为:"+user.getAmount());
try {
user.Transactions();
} catch (MyException e) {
// TODO Auto-generated catch block
e.amountInfo();
}//调用方法
System.out.println("交易后的金额为"+user.getAmount());
}
}
用Java编写银行账户存取款业务，急求！！
public class Account {
protected String accId;
protected String name;
protected double money;
public Account (String accId,String name){
this(accId,name,0);
}
public Account (String accId,String name,double money){
this.accId = accId;
this.name = name;
this.money = money;
}
public void saveMoney(double money){
if(money = 0){
System.out.println("存款金额必须大于0");
}
this.money += money;
System.out.println("存款成功");
}
public double getMoney(double money){
if(money = 0){
System.out.println("取款金额必须大于0");
return 0;
}
if(this.money = money){
System.out.println("余额不足，无法取款");
return 0;
}
this.money -= money;
System.out.println("取款成功");
return money;
}
public double getBalance(){
return this.money;
}
protected double getOverdraft(){
return 0;
}
// 实现了equals方法，list比较时才能正确
@Override
public boolean equals(Object obj) {
if(obj == null){
return false;
}
if(this == obj){
return true;
}
if(obj instanceof Account){
return this.accId.equals(((Account)obj).accId);
}
return false;
}
@Override
public String toString() {
return "账户=" + accId + ",名字=" + name + ",余额=" + money;
}
}
public class Bank {
// Account实现了equals方法，list查找时才能正确
private ListAccount usersAccounts;
public Bank() {
usersAccounts = new ArrayListAccount();
}
public void addAccount(Account account) {
if (usersAccounts.contains(account)) {
System.out.println("添加失败，不能添加同样的账户");
return;
}
usersAccounts.add(account);
}
public boolean delAccount(Account account) {
return usersAccounts.remove(account);
}
public boolean delAccount(String accId) {
return delAccount(new Account(accId, null));
}
public boolean existAccount(Account account) {
return usersAccounts.contains(account);
}
public boolean existAccount(String accId) {
return existAccount(new Account(accId, null));
}
public Account getAccount(String accId){
return usersAccounts.get(usersAccounts.indexOf(new Account(accId, null)));
}
public double getAllMoney() {
// 不考虑是否溢出，只是把所有用户余额相加
double result = 0;
for (Account account : usersAccounts) {
result += account.getBalance();
}
return result;
}
public double getAllOverdraft() {
// 不考虑是否溢出
double result = 0;
for (Account account : usersAccounts) {
result += account.getOverdraft();
}
return result;
}
public int getAccountNum() {
return usersAccounts.size();
}
public int getCreditAccountNum() {
int num = 0;
for (Account account : usersAccounts) {
// instanceof 性能没有简单的方法快。
if (account instanceof CreditAccount) {
num++;
}
}
return num;
}
public int getSavingAccountNum() {
int num = 0;
for (Account account : usersAccounts) {
if (account instanceof SavingAccount) {
num++;
}
}
return num;
}
public ListAccount getAllAccount() {
return usersAccounts;
}
}
public class CreditAccount extends Account{
private double overdraft;
public CreditAccount(String accId,String name){
super(accId, name);
this.overdraft = 1000;
}
public CreditAccount(String accId,String name,double money){
this(accId, name,money,1000);
}
public CreditAccount(String accId,String name,double money,double overdraft){
super(accId, name,money);
this.overdraft = overdraft;
}
@Override
public double getMoney(double money) {
if(money = 0){
System.out.println("取款金额必须大于0");
return 0;
}
if(this.money + overdraft = money){
System.out.println("余额不足，无法取款");
return 0;
}
this.money -= money;
System.out.println("取款成功");
return money;
}
@Override
public double getOverdraft(){
return overdraft;
}
@Override
public String toString() {
return "账户=" + accId + ",名字=" + name + ",余额=" + money + ",透支=" + overdraft;
}
}
public class SavingAccount extends Account {
public SavingAccount(String accId, String name) {
super(accId, name);
}
public SavingAccount(String accId, String name, double money) {
super(accId, name, money);
}
@Override
public double getMoney(double money) {
return super.getMoney(money);
}
@Override
public double getOverdraft() {
return super.getOverdraft();
}
}
public class Test {
private static Bank bank = new Bank();
public static void main(String[] args) {
Test.genAccount();
// 开户
Account a1 = new CreditAccount("1", "1", 200, 2000);
Account a2 = new SavingAccount("2", "2", 300);
Account a3 = new SavingAccount("3", "3", 400);
Account a4 = new CreditAccount("4", "4", 500, 2000);
Account a5 = new CreditAccount("4", "5", 600, 2000); // 帐号4重
bank.addAccount(a1);
bank.addAccount(a2);
bank.addAccount(a3);
bank.addAccount(a4);
bank.addAccount(a5);
showNowAccount();
// 销户
bank.delAccount("1");
bank.delAccount("2");
showNowAccount();
// 存款
if(bank.existAccount("3")){
Account acc = bank.getAccount("3");
acc.saveMoney(100);
}
showNowAccount();
// 取款
if(bank.existAccount("3")){
Account acc = bank.getAccount("3");
System.out.println("余额=" + acc.getBalance());
acc.getMoney(100);
System.out.println("余额=" + acc.getBalance());
acc.getMoney(1000);
System.out.println("余额=" + acc.getBalance());
}
if(bank.existAccount("4")){
Account acc = bank.getAccount("4");
System.out.println("余额=" + acc.getBalance());
acc.getMoney(100);
System.out.println("余额=" + acc.getBalance());
acc.getMoney(1000);
System.out.println("余额=" + acc.getBalance());
acc.getMoney(10000);
System.out.println("余额=" + acc.getBalance());
}
System.out.println(bank.getAccountNum());
System.out.println(bank.getAllMoney());
System.out.println(bank.getAllOverdraft());
System.out.println(bank.getCreditAccountNum());
System.out.println(bank.getSavingAccountNum());
}
public static void genAccount(){
String s = "1000 0000 0000 000";
Account a = null;
for(int i = 1; i 11; i ++){
if((i 2) == 0){
a = new CreditAccount(s + String.valueOf(i), "账户" + String.valueOf(i));
} else {
a = new SavingAccount(s + String.valueOf(i), "账户" + String.valueOf(i));
}
bank.addAccount(a);
}
}
public static void showNowAccount(){
for(Account account : bank.getAllAccount()){
System.out.println(account);
}
}
}
// 面向对象，看多写多了就会了，简单的随便写的，有错误先不用太纠结。
求高手用JAVA语言完成 银行业务ATM设计与实现
给你介绍本书《java项目开发案例精粹》，要是没记错的话上面有这个系统，你可以借鉴一下，希望能帮到你，这本书图书馆均有借的
用JAVA编写：银行业务UseAccount
这个没存货的你给150分估计也没人给你写。。。
不过挺简单，嘿嘿。
谁帮忙用JAVA设计一个银行类啊！要代码，在下感激不尽
/**
* @author
* @version 创建时间：Oct 15, 2009
* 类说明 About Bank
*/
public class Bank {
private String banksName;
private String banksAdds;
private String banksOther;
//等等......
public Bank() {
super();
}
public Bank(String banksName, String banksAdds, String banksOther) {
super();
this.banksName = banksName;
this.banksAdds = banksAdds;
this.banksOther = banksOther;
}
/**
* @return the banksName
*/
public String getBanksName() {
return banksName;
}
/**
* @param banksName the banksName to set
*/
public void setBanksName(String banksName) {
this.banksName = banksName;
}
/**
* @return the banksAdds
*/
public String getBanksAdds() {
return banksAdds;
}
/**
* @param banksAdds the banksAdds to set
*/
public void setBanksAdds(String banksAdds) {
this.banksAdds = banksAdds;
}
/**
* @return the banksOther
*/
public String getBanksOther() {
return banksOther;
}
/**
* @param banksOther the banksOther to set
*/
public void setBanksOther(String banksOther) {
this.banksOther = banksOther;
}
}
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