java聲明銀行類

① 用java編程設計一個銀行賬戶類，其中包括以下內容，並用字元界面模擬存款和取款過程。

import java.util.Scanner;

public class ZH {

private String zh;//賬戶
private String password;//密碼
private String openTime;//開戶時間
private String sfz;//身份證號
private double je;//存款金額
public String getZh() {
return zh;
}
public void setZh(String zh) {
this.zh = zh;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getOpenTime() {
return openTime;
}
public void setOpenTime(String openTime) {
this.openTime = openTime;
}
public String getSfz() {
return sfz;
}
public void setSfz(String sfz) {
this.sfz = sfz;
}
public double getJe() {
return je;
}
public void setJe(double je) {
this.je = je;
}

//存款方法
public void ck(double je){
this.je=this.je+je;//存入的金額加上原有的金額
}

//取款方法
public void qk(double je){
if(je>this.je){//取款金額大於余額
System.out.println("存款余額不足");
}else{
this.je=this.je-je;//原有的金額減去取出的金額
}
}
public static void main(String[] args) {
ZH zh = new ZH();//初始化一個賬戶信息
zh.setJe(10000.0);//向zh賬戶添加余額
zh.setOpenTime("2013.12.3");//向zh賬戶添加開發時間
zh.setPassword("123456");//向zh賬戶添加密碼
zh.setSfz("123456789");//向zh賬戶添加身份證
zh.setZh("zhangsan");//向zh賬戶添加賬號
System.out.println("歡迎光臨模擬銀行");
Scanner scan = new Scanner(System.in);
int count=0;//記錄輸入錯誤的次數
while(1==1){//循環
System.out.println("請輸入賬號");
String zhm=scan.next();
System.out.println("請輸入密碼");
String mm=scan.next();
if(zhm.equals(zh.getZh()) && mm.equals(zh.getPassword())){//輸入的信息與zh賬戶信息的密碼和賬號一致
while(1==1){
System.out.println("當前余額為："+zh.getJe()+"元。請選擇操作：1.存款；2.取款；3.退出（只能輸入數字）");
String cz=scan.next();
switch (Integer.parseInt(cz)) {
case 1:
System.out.println("請輸入存款金額（輸入小數）");
double ckje=scan.nextDouble();
zh.ck(ckje);
System.out.println("實施存款："+ckje+"元，當前余額為"+zh.getJe()+"元");
break;
case 2:
System.out.println("請輸入取款金額（輸入小數）");
double qkje=scan.nextDouble();
zh.qk(qkje);
System.out.println("實施取款："+qkje+"元，當前余額為"+zh.getJe()+"元");
break;
case 3:
break;
default:
System.out.println("暫無此功能");//輸入1或者2、3以外的操作
break;
}
if("3".equals(cz)){
break;
}
}
System.out.println("退出操作");
break;
}else{

if(count>=3){
System.out.println("已輸入錯誤三次，賬號被鎖");
break;//結束循環
}else{
System.out.println("賬號或密碼錯誤，請重新輸入");
count++;//錯誤一次count+1
continue;//進入下次循環
}
}
}

}
}

② 在java中，聲明銀行賬戶類，成員變數包括賬號，儲戶姓名，開戶時間，身份證號碼，存款余額等賬戶信息，成

import java.util.Scanner; public class bank
{ int number,id; int year,month,day; float money; String name; void set(int y,int m,int d)
{ year=y; month=m; day=d; } public String toString()

{ return year+"年"+month+"月"+day+"日"; } public float money1(int n)
{ money=money+n; return money; } public float money2(int x)
{ if(money<x) return 0; money=money-x; return money; } public static void main(String args[])
{ bank b=new bank(); b.set(2009,8,6); b.money=0; b.number=1; b.id=20102; b.name="張三"; System.out.println("用戶名："+b.name);
System.out.println("身份證號："+b.id); System.out.println("開戶日期是："+b.toString()); System.out.print("請輸入存入的數額："); Scanner sc = new Scanner(System.in); int i = sc.nextInt(); b.money1(i); System.out.print("賬戶余額："+b.money); System.out.println(); System.out.print("請輸入取款余額："); Scanner cc = new Scanner(System.in); int j = cc.nextInt(); b.money2(j); System.out.print("賬戶余額："+b.money); } }

③ 用JAVA語言編寫程序，模擬銀行賬戶功能。要有： 屬性：賬號、儲戶姓名、地址、存款余額、最小余額。

package com.cshr.test;

public class bank {
private String card;//賬號
private String uname;//儲戶姓名
private String address;//地址
private double money;//存款余額
public static final double minMoney=0;//最小余額
public bank(){}

public String getCard() {
return card;
}
public void setCard(String card) {
this.card = card;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public double getMoney() {
return money;
}
public void setMoney(double money) {
this.money = money;
}
public static double getMinmoney() {
return minMoney;
}
}

package com.cshr.test;

import java.util.List;

import org.hibernate.Session;

import com.utils.HibernateSessionFactory;

public class bankDao {
//存款
public void addMoney(double money,double Sqlmoney,String card){
Session session=HibernateSessionFactory.getSession();
try{
session.beginTransaction();

String hql="update bank b set b.money+="+money+Sqlmoney+" where b.card='"+card+"'";
session.createQuery(hql).executeUpdate();
session.beginTransaction().commit();
}catch(Exception e){
e.printStackTrace();
session.beginTransaction().rollback();
}finally{
HibernateSessionFactory.closeSession();
}
}
//取款
public void delMoney(double money,double Sqlmoney,String card){
Session session=HibernateSessionFactory.getSession();
try{
session.beginTransaction();

String hql="update bank b set b.money+="+(Sqlmoney-money)+" where b.card='"+card+"'";
session.createQuery(hql).executeUpdate();
session.beginTransaction().commit();
}catch(Exception e){
e.printStackTrace();
System.out.println("取款失敗");
session.beginTransaction().rollback();
}finally{
HibernateSessionFactory.closeSession();
}
}
//查詢所有
public List<bank> selectfind(){
Session session=HibernateSessionFactory.getSession();
session.beginTransaction();
String hql="select b from bank b ";
List<bank> list=session.createQuery(hql).list();
return list;
}
}

④ java定義一個類實現銀行賬戶的概念。

public class BankAccount {

String account ;
int account_num;

//構造函數
public BankAccount(String account,int account_num){
this.account=account;
this.account_num=account_num;
}
//存錢
public String addNum(int num){
account_num= account_num+num;
return "存錢成功";
}

//取錢
public String getNum(int num){
String result;
if(account_num>num){
account_num =account_num-num;
result="取錢成功";
}else{
result="賬戶余額不足，還剩"+account_num;
}
return result;
}

//顯示余額
public String displayNum(){
return "賬戶余額："+account_num;
}

//顯示賬號
public String displayAccount(){
return "賬戶："+account;
}

public static void main(String[] args){
BankAccount lucy = new BankAccount("lucy",100);
BankAccount jack = new BankAccount("jack",50);
//顯示他們各自的余額
System.out.println("===顯示他們各自的余額===");
System.out.println("lucy:"+lucy.displayNum());
System.out.println("jack:"+jack.displayNum());
//存錢取錢
System.out.println("===存錢取錢===");
System.out.println("lucy取50:"+lucy.getNum(50));
System.out.println("jack存200:"+jack.addNum(200));
//顯示賬戶 顯示余額
System.out.println("===存錢取錢===");
System.out.println(lucy.displayAccount()+""+lucy.displayNum());
System.out.println(jack.displayAccount()+""+jack.displayNum());

}

}

運行結果：
===顯示他們各自的余額===
lucy:賬戶余額：100
jack:賬戶余額：50
===存錢取錢===
lucy取50:取錢成功
jack存200:存錢成功
===存錢取錢===
賬戶：lucy賬戶余額：50
賬戶：jack賬戶余額：250