java银行管理系统源码

银行管理系统 (java实现)，供大家参考，具体内容如下

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<Studentss> 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<Studentss> 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<Studentss> 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<Studentss> 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<Studentss> 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<Studentss> 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<Studentss> 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<Studentss> 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<Studentss> 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<Studentss> 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<Studentss> 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!");
   }

  }
 }
}
}

注：(我的代码可以有些的纰漏，问题不是很大，基本逻辑写的差不多了，如果有问题，评论下，我虚心请教，希望我们的代码之路会越走越远！加油)

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