前言介紹：

最近很多同學(xué)找我?guī)兔ψ鲆恍┱n程設(shè)計(jì)或Web前端大作業(yè)、其中控制臺(tái)項(xiàng)目應(yīng)該是初學(xué)者必須經(jīng)歷的一個(gè)過(guò)程、作為java初學(xué)者這個(gè)控制臺(tái)版本的模擬ATM銀行管理系統(tǒng)十分合適、用到的技術(shù)也是最簡(jiǎn)單的JavaList集合、變量的聲明、對(duì)象的創(chuàng)建、一些基本的while語(yǔ)句、switch語(yǔ)句、循環(huán)遍歷等基礎(chǔ)語(yǔ)法。一個(gè)最基礎(chǔ)版本的控制臺(tái)模擬ATM銀行管理系統(tǒng)也就是CRUD功能、 直接上完整代碼****

創(chuàng)建抽象類Card類

abstract class Card { int cardId; public Card() { super(); } public Card(int cardId) { super(); this.cardId = cardId; } public abstract String getCardId(); public abstract void setCardId(int cardId); }

創(chuàng)建普通銀行類繼承Card

public class CommonCard extends Card{ public CommonCard() { super(); } public CommonCard(int cardId) { super(); this.cardId = cardId; } @Override public String getCardId() { return "普通銀行卡卡號(hào)為：" cardId; } @Override public void setCardId(int cardId) { this.cardId = cardId; } }

創(chuàng)建普通信用卡繼承Card

package com.railway.modules.base.test;public class CreditCard extends Card{ public CreditCard() { super(); } public CreditCard(int cardId) { super(cardId); } @Override public String getCardId() { return "信用卡卡號(hào)為：" cardId; } @Override public void setCardId(int cardId) { this.cardId = cardId; }}

創(chuàng)建普通醫(yī)?？ɡ^承Card

package com.railway.modules.base.test;public class MedicalInsuranceCard extends Card{ public MedicalInsuranceCard() { super(); } public MedicalInsuranceCard(int cardId) { super(cardId); } @Override public String getCardId() { return "醫(yī)保卡卡號(hào)為：" cardId; } @Override public void setCardId(int cardId) { this.cardId = cardId; } }

ATM主要方法業(yè)務(wù)類邏輯實(shí)現(xiàn)

package com.railway.modules.base.test;import java.util.Scanner;public class ATM { Scanner input = new Scanner(System.in); private User[] user=new User[100]; User atm = new User(); private User usr; private int accountId = 1; private Card card; public void Select() { while(true) { System.out.println("=======ATM管理系統(tǒng)======="); System.out.print("1.開(kāi)戶n2.登錄n3.取款n4.存款n5.余額查詢n6.修改密碼n7.查看用戶信息n8.退出登錄n9.退出系統(tǒng)n請(qǐng)選擇需要選擇的項(xiàng)目："); switch(input.nextInt()) { case 1: setAccount(); //開(kāi)戶 break; case 2: usr=userLogin(); //登錄 break; case 3: drawMoney(); //取款 break; case 4: depositMoney(); //存款 break; case 5: showBalance(); //余額查詢 break; case 6: revisePassword(); //修改密碼 break; case 7: lookAccount(); //查看用戶信息 break; case 8: cancel();//退出登錄 break; case 9: System.out.println("======================="); System.out.println("歡迎下次登錄該系統(tǒng)！"); //退出系統(tǒng) System.exit(0); break; default: System.out.println("======================="); System.out.println("輸入錯(cuò)誤！請(qǐng)重新輸入！"); break; } } } public void setAccount(){ //開(kāi)戶 if (usr!=null) { System.out.println("======================="); System.out.println("請(qǐng)先退出上一個(gè)賬戶!"); } else{ boolean x = true; while(x) { System.out.println("======================="); System.out.print("1.普通銀行卡n2.信用卡n3.醫(yī)?？╪0.返回n請(qǐng)選擇開(kāi)戶類型："); switch(input.nextInt()) { case 1: card = new CommonCard(); card.setCardId(accountId); x=false; break; case 2: card = new CreditCard(); card.setCardId(accountId); x=false; break; case 3: card = new MedicalInsuranceCard(); card.setCardId(accountId); x=false; break; case 0: Select(); default: System.out.println("======================="); System.out.println("輸入錯(cuò)誤！請(qǐng)重新輸入！"); break; } } System.out.print("請(qǐng)輸入姓名："); String name=input.next(); System.out.print("請(qǐng)輸入性別："); String sex=input.next(); System.out.print("請(qǐng)輸入年齡："); String age=input.next(); System.out.print("請(qǐng)輸入身份證號(hào)："); String ID=input.next(); System.out.print("請(qǐng)輸入銀行卡要設(shè)置的密碼："); String password1=input.next(); System.out.print("請(qǐng)?jiān)俅屋斎朊艽a："); String password2=input.next(); if(password1.equals(password2)){ user[accountId]=new User(name,sex,age,password1,ID,0,card); System.out.println("======================="); System.out.println("開(kāi)戶成功！你的卡號(hào)為：" accountId); accountId ; } else { System.out.println("======================="); System.out.println("兩次密碼不同！請(qǐng)重新開(kāi)始！"); } } } public User userLogin(){ //登錄 if (usr!=null) { System.out.println("======================="); System.out.println("請(qǐng)先退出上一個(gè)賬戶!"); return usr; } else{ System.out.print("請(qǐng)輸入卡號(hào)："); int aId=input.nextInt(); System.out.print("請(qǐng)輸入密碼："); String password=input.next(); for(int i=0;i<user.length;i ){ if (user[i]!=null) { if (aId==user[i].getCard()&&password.equals(user[i].getPassword())) { System.out.println("======================="); System.out.println(user[i].getName() "，歡迎登錄！"); return user[i]; } } } System.out.println("======================="); System.out.println("卡號(hào)或密碼有誤"); return null; } } public void drawMoney(){ //取款 if(usr==null){ System.out.println("======================="); System.out.println("請(qǐng)先登錄賬戶！"); } else{ System.out.print("請(qǐng)輸入取款金額："); double blc=input.nextDouble(); while(blc>usr.getBalance()) { System.out.println("======================="); System.out.print("取款金額大于余額，請(qǐng)重新輸入取款金額："); blc=input.nextDouble(); } while(blc<=0){ System.out.println("======================="); System.out.print("取款金額錯(cuò)誤，請(qǐng)重新輸入取款金額："); blc=input.nextDouble(); } usr.setBalance(usr.getBalance()-blc); System.out.println("======================="); System.out.println("取款成功！"); System.out.println("賬戶余額：" usr.getBalance()); } } public void depositMoney(){ //存款 if(usr==null){ System.out.println("======================="); System.out.println("請(qǐng)先登錄賬戶！"); } else{ System.out.print("請(qǐng)輸入存款金額："); double dsm=input.nextDouble(); while(dsm<=0){ System.out.println("======================="); System.out.print("輸入金額錯(cuò)誤，請(qǐng)重新輸入："); dsm=input.nextDouble(); } usr.setBalance(usr.getBalance() dsm); System.out.println("======================="); System.out.println("存款成功！"); System.out.println("賬戶余額：" usr.getBalance()); } } public void showBalance(){ //余額查詢 if(usr==null){ System.out.println("======================="); System.out.println("請(qǐng)先登錄賬戶！"); } else{ System.out.println("======================="); System.out.println("賬戶余額：" usr.getBalance()); } } public void revisePassword(){ //修改密碼 if(usr==null){ System.out.println("======================="); System.out.println("請(qǐng)先登錄賬戶！"); } else{ System.out.print("請(qǐng)輸入原密碼："); String password=input.next(); for(int i=2;i>=0;i--) { if(password.equals(usr.getPassword())) break; if(i==0) { System.out.println("三次密碼輸入錯(cuò)誤！即將退出賬戶！"); cancel(); Select(); } System.out.println("密碼錯(cuò)誤！你還有" i "次機(jī)會(huì)！"); System.out.print("請(qǐng)輸入原密碼："); password=input.next(); } System.out.print("驗(yàn)證成功，請(qǐng)輸入新密碼："); String password1=input.next(); System.out.print("請(qǐng)?jiān)俅屋斎朊艽a："); String password2=input.next(); while(!password1.equals(password2)) { System.out.println("======================="); System.out.print("兩次密碼不同，請(qǐng)重新輸入新密碼："); password1=input.next(); System.out.print("請(qǐng)?jiān)俅屋斎朊艽a："); password2=input.next(); } usr.setPassword(password1); System.out.println("======================="); System.out.println("修改成功！"); } } public void lookAccount() { //查看用戶信息 if(usr==null){ System.out.println("======================="); System.out.println("請(qǐng)先登錄賬戶！"); } else{ System.out.println("======================="); System.out.println("姓名：" usr.getName()); System.out.println("性別：" usr.getSex()); System.out.println(usr.getCardId()); System.out.println("身份證號(hào)：" usr.getID()); System.out.println("余額：" usr.getBalance()); } } public void cancel() { if(usr==null){ System.out.println("======================="); System.out.println("請(qǐng)先登錄賬戶！"); } else{ usr=null; System.out.println("======================="); System.out.println("賬戶退出成功！"); } }}

main方法測(cè)試啟動(dòng)類

public class TestATM { public static void main(String[] args) { ATM atm = new ATM(); atm.Select(); }}

控制臺(tái)打印：

=======ATM管理系統(tǒng)=======1.開(kāi)戶2.登錄3.取款4.存款5.余額查詢6.修改密碼7.查看用戶信息8.退出登錄9.退出系統(tǒng)請(qǐng)選擇需要選擇的項(xiàng)目：1=======================1.普通銀行卡2.信用卡3.醫(yī)?？?.返回請(qǐng)選擇開(kāi)戶類型：1請(qǐng)輸入姓名：admin請(qǐng)輸入性別：男請(qǐng)輸入年齡：22請(qǐng)輸入身份證號(hào)：513922199555555555請(qǐng)輸入銀行卡要設(shè)置的密碼：123456請(qǐng)?jiān)俅屋斎朊艽a：123456=======================開(kāi)戶成功！你的卡號(hào)為：1=======ATM管理系統(tǒng)=======1.開(kāi)戶2.登錄3.取款4.存款5.余額查詢6.修改密碼7.查看用戶信息8.退出登錄9.退出系統(tǒng)請(qǐng)選擇需要選擇的項(xiàng)目：2請(qǐng)輸入卡號(hào)：1請(qǐng)輸入密碼：123456=======================admin，歡迎登錄！=======ATM管理系統(tǒng)=======1.開(kāi)戶2.登錄3.取款4.存款5.余額查詢6.修改密碼7.查看用戶信息8.退出登錄9.退出系統(tǒng)請(qǐng)選擇需要選擇的項(xiàng)目：

很基礎(chǔ)、 適合java初學(xué)者來(lái)進(jìn)行練習(xí)以及當(dāng)做課程作業(yè)來(lái)使用