完整代碼：客戶類〔classperson〕:package客戶管理系統;publicclassPerson{privateintnum;privateStringname;privateStringaddress;privateStringse*;publicPerson(){}publicPerson(intnum,Stringname,Stringaddress,Stringse*){this.num=num;=name;this.address=address;this.se*=se*;}publicvoidsetNum(intnum){this.num=num;}publicintgetNum(){returnnum;}publicvoidsetName(Stringname){=name;}publicStringgetName(){returnname;}publicvoidsetAddress(Stringaddress){this.address=address;}publicStringgetAddress(){returnaddress;}publicvoidsetSe*(Stringse*){this.se*=se*;}publicStringgetSe*(){returnse*;}publicStringtoString(){return"\t"+num+"\t"+name+"\t"+address+"\t"+se*;}}菜單類(classMenu):package客戶管理系統;importjava.util.Scanner;publicclassMenu{Scannerinput=newScanner(System.in);publicMenu(){}publicintshowMenu(){System.out.println("***********************************");System.out.println("客戶管理系統");System.out.println("================================System.out.println("[1】增加");System.out.println("[2】刪除");System.out.println("[3】修改");System.out.println("[4】查詢");System.out.println("[5】瀏覽");System.out.println("[6】退出");System.out.println("***********************************");System.out.print("請選擇操作：");returninput.ne*tInt();}publicintsubMenu(){System.out.println("\t【查詢客戶】");System.out.println("\t[1]按客戶編號查詢")；System.out.println("\t[2]按客戶**查詢");System.out.println("\t[3]按地址查詢")；System.out.println("\t[4]退出");System.out.println("\t請選擇查詢編號")；returninput.ne*tInt();}實際操作類〔classFileOperatepackage客戶管理系統；importjava.io.BufferedReader;importjava.io.File；importjava.io.FileNotFoundE*ception；importjava.io.FileReader；importjava.io.IOE*ception；importjava.io.PrintWriter；importjava.util.ArrayList；importjava.util.List；importjava.util.Scanner；publicclassFileOperate{privatestaticStringINFO="D:/info.dat"；Filefile=newFile(INF)；Scannerinput=newScanner(System.in)；publicFileOperate(){if(!file.e*ists()){try{file.createNewFile()；}catch(IOE*ceptione){e.printStackTrace()；}}publicList<Person>getList()throwsNumberFormatE*ception,IOE*ception{BufferedReaderbr=newBufferedReader(newFileReader(file));Stringmsg=null;List<Person>list=newArrayList<Person>();while((msg=br.readLine())!=null){Stringarr[]=msg.split("\t");intnum=Integer.parseInt(arr[0]);Stringname=arr[1];Stringaddress=arr[2];Stringse*=arr[3];Personperson=newPerson(num,name,address,se*);list.add(person);}br.close();returnlist;}privatevoidsavelist(List<Person>list)throwsFileNotFoundE*ception{PrintWriterpw=newPrintWriter(newFile(INF));for(Personc:list){pw.format("%d\t%s\t%s\t%s\t\r\n",c.getNum(),c.getName(),c.getAddress(),c.getSe*());}pw.close();}publicintgetper(intnum)throwsNumberFormatE*ception,IOE*ception{List<Person>list=getList();for(inti=0;i<list.size();i++){Personper=list.get(i);if(num==per.getNum()){returni;}}return-1;}//增加publicvoidinsert()throwsNumberFormatE*ception,IOE*ception{System.out.println("請輸入")；intnum=input.ne*tInt();intinde*=getper(num)；if(inde*!=-1){System.out.println("此編號已存在！")；}else{System.out.println("請輸入**:");Stringname=input.ne*t()；System.out.println("請輸入地址：")；Stringaddress=input.ne*t()；System.out.println("請輸入性別：")；Stringse*=input.ne*t()；Personperson=newPerson(num,name,address,se*)；List<Person>list=getList()；list.add(person)；savelist(list)；System.out.println("新增成功！")；}}//刪除publicvoiddelete()throwsNumberFormatE*ception,IOE*ception{System.out.println("請輸入要刪除的");intnum=input.ne*tInt()；List<Person>list=getList()；booleanflag=false；for(inti=0；i<list.size()；i++){Personper=list.get(i)；if(num==per.getNum()){showTitle()；System.out.println(per);System.out.println("是否確定刪除〔Y/N〕.");Stringanswer=input.ne*t();if("Y".equalsIgnoreCase(answer)){list.remove(i);savelist(list);System.out.println("刪除成功!");}flag=true;break;}}if(!flag){System.out.println("該客戶不存在！")；}}//修改publicvoidupdate()throwsNumberFormatE*ception,IOE*ception{shoAll();System.out.println("請輸入\n");intnum=input.ne*tInt();intId=getper(num);if(Id!=-1){System.out.println("請輸入**:");Stringname=input.ne*t();System.out.println("請輸入地址:");Stringaddress=input.ne*t();System.out.println("請輸入性別:");Stringse*=input.ne*t();List<Person>list=getList();Personper=list.get(Id);per.setName(name);per.setAddress(address);per.setSe*(se*);showTitle();System.out.println(per);savelist(list);System.out.println("修改成功！")；}else{System.out.println("編號不存在！")；}}//查詢publicvoidsearch()throwsNumberFormatE*ception,IOE*ception{booleanflag=true；List<Person>list=getList()；if(list.size()!=0){while(flag){intslt=newMenu().subMenu()；switch(slt){case1:System.out.print("\t請輸入")；findId(input.ne*tInt())；break；case2:System.out.print("\t請輸入**：")；findName(input.ne*t())；break；case3:System.out.print("\t請輸入地址：")；findAddress(input.ne*t())；break；case4:flag=quit()；break；}}}else{System.out.println("無任何信息！");}//按編號查詢publicvoidfindId(intnum)throwsNumberFormatE*ception,IOE*ception{List<Person>list=getList();booleanflag=false;for(inti=0;i<list.size();i++){Personper=list.get(i);if(num==per.getNum()){showTitle();System.out.println(per);flag=true;break;}}if(!flag){System.out.println("\t該客戶不存在！");}}//按**查詢publicvoidfindName(Stringname)throwsNumberFormatE*ception,IOE*ception{List<Person>list=getList();booleanflag=false;for(inti=0;i<list.size();i++){Personper=list.get(i);if(name.equals(per.getName())){showTitle();System.out.println(per);flag=true;break;}}if(!flag){System.out.println("\t該客戶不存在！");}}//按地址查找publicvoidfindAddress(Stringaddress)throwsNumberFormatE*ception,IOE*ception{List<Person>list=getList();booleanflag=false;for(inti=0;i<list.size();i++){Personper=list.get(i);if(address.equals(per.getAddress())){showTitle();flag=true;System.out.println(per);break;}}if(!flag){System.out.println("\t該客戶不存在！")；}}//退出查詢publicbooleanquit(){System.out.println("是否確定退出〔Y/N〕.");if("Y".equalsIgnoreCase(input.ne*t())){System.out.println("退出成功！")；returnfalse;}else{returntrue;}}//瀏覽publicvoidshoAll()throwsNumberFormatE*ception,IOE*ception{List<Person>list=getList();if(list.size()!=0){showTitle();for(Personperson:list){System.out.println