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1.创建一个封装类（Studentss）
import javax.naming.Name;
import javax.naming.NamingEnumeration;
public class Studentss {
//无参
public Studentss(){}
//有参
public Studentss(String name,String account,int balance,String uesrpwds,String card){
super();
this.name=name;
this.account=account;
this.balance=balance;
this.uesrpwds=uesrpwds;
this.card=card;
}
//修改
public Studentss(String name,String account,int balance,String uesrpwds,String card,int id){
super();
this.name=name;
this.account=account;
this.balance=balance;
this.uesrpwds=uesrpwds;
this.card=card;
this.id = id;
}
//定义一个数据类封装
private String name;//名字
private String account;//账号
private int balance;//余额
private String uesrpwds;//密码
private String card;//身份证号
private int id;//编号
//封装id
public int getId(){
return id;
}
public void setId(int id) {
this.id = id;
}
//封装名字get
public String getName(){
return name;
}
public void setName(String name) {
this.name = name;
}
//封装账号get
public String getAccount(){
return account;
}
public void setAccount(String account) {
this.account = account;
}
//封装余额get
public int getBalance() {
return balance;
}
public void setBalance(int balance) {
this.balance = balance;
}
//封装密码get
public String getUesrpwds() {
return uesrpwds;
}
public void setUesrpwds(String uesrpwds) {
this.uesrpwds = uesrpwds;
}
//封装身份证get
public String getCard() {
return card;
}
//set身份证
public void setCard(String card) {
this.card = card;
}
@Override
public String toString() {
return super.toString();
}
}2.实现增删改查等效果 main方法(DoemTest)
import com.sun.org.apache.xpath.internal.objects.XObject;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Scanner;
public class DoemTest{
public static ArrayList list =new ArrayList<>();//声明数组
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
//初始化两个数据
Studentss studentss = new Studentss();
studentss.setName("张颖颖");
studentss.setAccount("17908064359");
studentss.setBalance(2000);
studentss.setUesrpwds("4321");
studentss.setCard("510010619891231127");
list.add(studentss);//初始化数组 添加值
Studentss studentss1 = new Studentss();
studentss1.setName("刘华");
studentss1.setAccount("17908064368");
studentss1.setBalance(8000);
studentss1.setUesrpwds("4567");
studentss1.setCard("410207198904051271");
list.add(studentss1);//初始化数组 添加值
// this.list =new ArrayList<>();
//String pass =input.lenth();
int input;
//银行增删改查输出
System.out.println("账户姓名:张颖颖 账号: 17908064359 存款余额: 2000 密码：4321 身份证号:510010619891231127");
System.out.println("账户姓名:刘华 账号: 17908064368 存款余额: 8000 密码：4567 身份证号:410207198904051271");
do {
System.out.println("=====================欢迎使用知道银行服务====================");
System.out.println("1:开户 2:存款 3: 取款 4: 转账 5:查余额 6:修改密码 0:退出");
System.out.println("===========================================================");
//判断输出选项
Scanner set = new Scanner(System.in);//接受输入的值（0~6）;
input =set.nextInt();
switch (input){
case 1://开户
Openaccount(list);
break;
case 2://存款
CunKuang(list);
break;
case 3://取款
Qukuang(list);
break;
case 4://转账
Zhuangzhang(list);
break;
case 5://查询余额
Chaxun(list);
break;
case 6://修改密码
Changethepassword(list);
break;
case 0://退出
System.out.println("谢谢使用!");
break;
default:
System.out.println("请输入指定的命令语句！");
break;
}
}while (input != 0);
}
//开户
public static void Openaccount(ArrayList list){
Studentss studentss =new Studentss();
int RDnum=(int)((Math.random()*9+1)*1000);//定义数据数
Scanner sc=new Scanner(System.in);
System.out.println("请输入用户名:");
String name = sc.next();
studentss.setName(name);//接收输出
//list.add(studentss.getName());//存储数据
System.out.println("请输入账号密码:");
String uesrpwds=sc.next();
studentss.setUesrpwds(uesrpwds);//接收输出
//list.add(studentss.getUesrpwds());//存储数据
System.out.println("请输入身份证号:");
String card= sc.next();
studentss.setCard(card);//接收输出
//list.add(studentss.getCard());//存储数据
System.out.println("请输入金额:");
int balance=sc.nextInt();
studentss.setBalance(balance);//接收输出
//list.add(studentss.getBalance());//存储数据
String account="1790806"+RDnum; //账号:
studentss.setAccount(account);//接收输出
//list.add(studentss.getAccount());//存储数据
System.out.println("账号:"+account);
System.out.println("账号名:"+name);
System.out.println("余额:"+balance);
System.out.println("创建成功!");
list.add(studentss);
}
//查询金额
public static void Chaxun(ArrayList list) {
Scanner cx2 = new Scanner(System.in);
System.out.println("请输入账号:");
String account = cx2.next();
System.out.println("请输入账号密码:");
Scanner mc2 = new Scanner(System.in);
String uesrpwds = cx2.next();
Iterator iterator = list.iterator();
while (iterator.hasNext()) {//判断是否存在下一个对象元素
Studentss studentss = (Studentss) iterator.next();//获取下一元素
if (account.equals(studentss.getAccount()) &&
uesrpwds.equals(studentss.getUesrpwds())) {
System.out.println("账号的金额为:" + studentss.getBalance());
break;
}
}
}
//存款
public static void CunKuang(ArrayList list){
//对象
// Studentss studentss= new Studentss();
System.out.println("请输入账号:");
Scanner cx = new Scanner(System.in);
String account =cx.next();
Iterator iterator = list.iterator();
while (iterator.hasNext()){
Studentss studentss =(Studentss) iterator.next();
if (account.equals(studentss.getAccount())){
System.out.println("请输入存款金额:");
Scanner cxc =new Scanner(System.in);
int num = cxc.nextInt();
if (num >= 0) {
studentss.setBalance(studentss.getBalance()+num);
System.out.println("存款成功!余额为:"+studentss.getBalance());
break;
}else {
System.out.println("存款失败!余额为:"+studentss.getBalance());
break;
}
}
else {
} if(iterator.hasNext() ==false){
System.out.println("查无账号!");
}
}
}
//取款
public static void Qukuang(ArrayList list){
Scanner cx = new Scanner(System.in);
System.out.println("请输入账号:");
String account =cx.next();
Scanner mc = new Scanner(System.in);
System.out.println("请输入账号密码:");
String uesrpwds =mc.next();
//迭代器
Iterator iterator = list.iterator();
while (iterator.hasNext()){//判断是否存在下一个对象元素
Studentss studentss =(Studentss) iterator.next();//获取下一元素
//判断密码账号是否存在相等
if(account.equals(studentss.getAccount())&&uesrpwds.equals(studentss.getUesrpwds()))
{
System.out.println("请输入取款金额:");
Scanner mcx =new Scanner(System.in);
int mic =mcx.nextInt();
studentss.setBalance(studentss.getBalance()-mic);
if (mic>studentss.getBalance()){
System.out.println("取款失败！");
}else {
System.out.println("取款成功!余额为:"+studentss.getBalance());
}
break;
}else {
if(iterator.hasNext() ==false){
System.out.println("账号或者密码不存在!");
}
}
}
}
//转账
public static void Zhuangzhang(ArrayList list){
Scanner input = new Scanner(System.in);// 赋值一个输入值
System.out.println("请输入转出账号:");
String account =input.next();
System.out.println("请输入转出账户密码:");
String pwd1=input.next();
System.out.println("请输入转入账号:");
String account1=input.next();
//迭代器
Iterator iterator=list.iterator();
while (iterator.hasNext()){
Studentss studentss=iterator.next();
//判断转出账户是否存在
if (account.equals(studentss.getAccount())&&pwd1.equals(studentss.getUesrpwds()) ) {
System.out.println("请输入转出金额");
int moneys=input.nextInt();
//判断转出账户金额是否大于或小于所需要金额
if (studentss.getBalance()>=moneys){
//迭代器在迭代一次
Iterator iterator1=list.iterator();
while (iterator1.hasNext()){
Studentss studentss1=iterator1.next();
//判断转入账户是否存在
if (account1.equals(studentss1.getAccount())&&account!=account1){
//满足条件转出账户扣除金额
studentss.setBalance(studentss.getBalance()-moneys);
//满足条件转入账户存入金额
studentss1.setBalance(studentss1.getBalance()+moneys);
System.out.println("转账成功,转出账号:" +studentss.getAccount()+ "转出金额:" +studentss.getBalance()
+"转入账号:" +studentss1.getAccount()+ "转入金额" +studentss1.getBalance());
break;
}
}
break;
}
else {
System.out.println("转账失败!余额为:"+studentss.getBalance());
}
break;
}
else {
if(iterator.hasNext()==false){
System.out.println("请输入正确账户!");
}
}
}
}
//修改密码
public static void Changethepassword(ArrayList list){
System.out.println("请输入账号:");
Scanner cx = new Scanner(System.in);
String account =cx.next();
System.out.println("请输入账号原密码:");
Scanner mc = new Scanner(System.in);
String uesrpwds =mc.next();
//迭代器
Iterator iterator = list.iterator();
while (iterator.hasNext()){//判断是否存在下一个对象元素
Studentss studentss =(Studentss) iterator.next();//获取下一元素
//判断密码账号是否存在相等
if(account.equals(studentss.getAccount())&&uesrpwds.equals(studentss.getUesrpwds()))
{ Scanner mc1 = new Scanner(System.in);
System.out.println("请输入账号新密码:");
String uesrpwds1 =mc1.next();
Scanner mc2 = new Scanner(System.in);
System.out.println("请再次输入新密码:");
String uesrpwds2 =mc2.next();
if (uesrpwds1.equals(uesrpwds2)) {
studentss.setUesrpwds(uesrpwds1);
System.out.println("账号修改密码成功！");
break;
}else {
System.out.println("两次密码不一样");
break;
}
}else {
if(iterator.hasNext()==false){
System.out.println("请输入正确账户或密码!");
}
}
}
}
} 关于java银行管理系统的实现就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
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