董珈圻的第三次bolg，期末总结
一.前言
本学期开始接触java到现在已经有一学期时间，在这一学期之间里，我已经学习了很多关于面向对象的知识，做了老师布置给我的习题，并且自己通过老师的分享学习了很多新知识，这是我第三次写博客，下面我对第一学期相关内容做总结，其中包括滇西计费，javaFx等等。
二.学习总结
1.作业总结
1. 电信计费系列7.1-7.3
（1）7.1
题目:如下
代码:
import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.Scanner; public class Main { public static void main(String[] args) { ArrayList<User> Users = new ArrayList<>(); int numC = 0; String callNumber; String answerNumber; String startTime; String endTime; String line; LandPhoneInCityRule a0 =new LandPhoneInCityRule(); LandPhoneInProvinceRule a1 = new LandPhoneInProvinceRule(); LandPhoneInlandRule a2 =new LandPhoneInlandRule(); ArrayList<ChargeRule> c = new ArrayList<>(); c.add(a0); c.add(a1); c.add(a2); Scanner a = new Scanner(System.in); String kh = ("[u]-0791[0-9]{7,8}\\s[0]"); String jl = "[t]-0791[0-9]{7,8}\\s" + "0[0-9]{9,11}\\s" + "((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.(((0?[13578]|1[02])\\.(0?[1-9]|[12][0-9]|3[01]))|(([469]|11)\\.([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|[13579][26])|(([48]|[2468][048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])\\s((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.((([13578]|1[02])\\.([1-9]|[12][0-9]|3[01]))|(([469]|11)\\.([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|[13579][26])|(([48]|[2468][048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])"; line = a.nextLine(); while (!line.equals("end")){ if (line.matches(kh)) { String[] kh1 = line.split("-"); kh1 = kh1[1].split(" "); for(User x:Users){ if(x.getNumber().equals(kh1[0])){ numC = 1; break; } } if(numC == 0){ User user = new User(); user.setNumber((kh1[0])); Users.add(user); } }else if(line.matches(jl)){ String[] jl1 = line.split("-"); jl1 = jl1[1].split(" "); callNumber = jl1[0]; answerNumber = jl1[1]; CallRecord callRecord = new CallRecord(); callRecord.setCallingNumber(callNumber); callRecord.setCallingAddressAreaCode(callNumber.substring(0,4)); callRecord.setAnswerNumber(answerNumber); callRecord.setAnswerAddressAreaCode(answerNumber.substring(0,4)); try{ SimpleDateFormat aq2 = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss"); startTime = jl1[2]+" "+jl1[3]; endTime = jl1[4]+" "+jl1[5]; Date stareTimeDate = aq2.parse(startTime); Date endTimeDate = aq2.parse(endTime); callRecord.setStartTime(stareTimeDate); callRecord.setEndTime(endTimeDate); callRecord.setCallingNumber(callNumber); callRecord.setCallingAddressAreaCode(callNumber.substring(0,4)); callRecord.setAnswerNumber(answerNumber); callRecord.setAnswerAddressAreaCode(answerNumber.substring(0,4)); for(User user: Users){//存通话记录 if(user.getNumber().equals(callNumber)&&endTimeDate.getTime()>stareTimeDate.getTime()){ if(user.getNumber().substring(0,4).equals(callRecord.getAnswerAddressAreaCode())){ user.getUserRecords().addAnswerInCityRecords(callRecord); }else if(callRecord.getAnswerNumber().startsWith("079")|| callRecord.getAnswerNumber().startsWith("0701")){ user.getUserRecords().addAnswerInProvinceRecords(callRecord); }else{ user.getUserRecords().addAnswerInLandRecords(callRecord); } } } } catch (ParseException e) { throw new RuntimeException(e); } } line = a.nextLine(); } for(User user:Users){ user.getChargeMode().setChargeRules(c); } for(int i=0;i<Users.size()-1;i++){ for(int j=i+1;j<Users.size();j++){ if(Double.parseDouble(Users.get(i).getNumber())>Double.parseDouble(Users.get(j).getNumber())){ User con; con = Users.get(i); Users.set(i,Users.get(j)); Users.set(j,con); } } } for(User user: Users){ user.setBalance(user.getBalance()-user.getChargeMode().calCost(user.getUserRecords())); System.out.printf("%s ",user.getNumber()); System.out.printf("%.1f ",80-user.getBalance()); System.out.printf("%.1f\n",user.getBalance()); } } } abstract class CallChargeRule extends ChargeRule{//计费规则父类 public double calCost(ArrayList<CallRecord> callRecords){ return 1; } } class CallRecord extends CommunicationRecord {//具体的某一通话记录类 private Date StartTime; private Date endTime; private String callingAddressAreaCode; private String answerAddressAreaCode; public Date getStartTime() { return StartTime; } public void setStartTime(Date startTime) { StartTime = startTime; } public Date getEndTime() { return endTime; } public void setEndTime(Date endTime) { this.endTime = endTime; } public String getCallingAddressAreaCode() { return callingAddressAreaCode; } public void setCallingAddressAreaCode(String callingAddressAreaCode) { this.callingAddressAreaCode = callingAddressAreaCode; } public String getAnswerAddressAreaCode() { return answerAddressAreaCode; } public void setAnswerAddressAreaCode(String answerAddressAreaCode) { this.answerAddressAreaCode = answerAddressAreaCode; } } abstract class ChargeMode {//计费规则的合计 private ArrayList<ChargeRule> chargeRules = new ArrayList<ChargeRule>(); public ArrayList<ChargeRule> getChargeRules() { return chargeRules; } public void setChargeRules(ArrayList<ChargeRule> chargeRules) { this.chargeRules = chargeRules; } public double calCost(UserRecords userRecords){ return 1; } public double getMonthlyRen(){ return 1; } } abstract class ChargeRule { public double calCost(ArrayList<CallRecord> callRecords){ return 1; } } abstract class CommunicationRecord { private String callingNumber; private String answerNumber; public String getCallingNumber() { return callingNumber; } public void setCallingNumber(String callingNumber) { this.callingNumber = callingNumber; } public String getAnswerNumber() { return answerNumber; } public void setAnswerNumber(String answerNumber) { this.answerNumber = answerNumber; } } class LandlinePhoneCharging extends ChargeMode { private double monthlyRent = 20; @Override public double calCost(UserRecords userRecords){//计算消费 double cost1,cost2,cost3; cost1 = getChargeRules().get(0).calCost(userRecords.getAnswerInCityRecords()); cost2 = getChargeRules().get(1).calCost(userRecords.getAnswerInProvinceRecords()); cost3 = getChargeRules().get(2).calCost(userRecords.getAnswerInLandRecords()); return cost1 + cost2 + cost3 + monthlyRent; } @Override public double getMonthlyRen(){ return monthlyRent; } } class LandPhoneInCityRule extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long miao = 0; long fen = 0; long sum= 0; for(int i=0;i<callRecords.size();i++){ callRecords.get(i); miao=(callRecords.get(i).getEndTime().getTime()-callRecords.get(i).getStartTime().getTime())/1000; fen = miao / 60; if(miao % 60!=0){ fen = fen + 1; } sum=sum+fen; } return sum*0.1; } } class LandPhoneInlandRule extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long miao = 0; long fen = 0; long sum= 0; for(int i=0;i<callRecords.size();i++){ callRecords.get(i); miao=(callRecords.get(i).getEndTime().getTime()-callRecords.get(i).getStartTime().getTime())/1000; fen = miao / 60; if(miao % 60!=0){ fen = fen + 1; } sum=sum+fen; } return sum*0.6; } } class LandPhoneInProvinceRule extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long miao = 0; long fen = 0; long sum= 0; for(int i=0;i<callRecords.size();i++){ callRecords.get(i); miao=(callRecords.get(i).getEndTime().getTime()-callRecords.get(i).getStartTime().getTime())/1000; fen = miao / 60; if(miao % 60!=0){ fen = fen + 1; } sum=sum+fen; } return sum*0.3; } } class MessageRecord extends CommunicationRecord{ private String message; public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } } class User { private UserRecords userRecords = new UserRecords(); private double balance = 100; private ChargeMode chargeMode = new LandlinePhoneCharging(); private String number ; public UserRecords getUserRecords() { return userRecords; } public void setUserRecords(UserRecords userRecords) { this.userRecords = userRecords; } public double getBalance() { return balance; } public void setBalance(double balance) { this.balance = balance; } public ChargeMode getChargeMode() { return chargeMode; } public void setChargeMode(ChargeMode chargeMode) { this.chargeMode = chargeMode; } public String getNumber() { return number; } public void setNumber(String number) { this.number = number; } public double calBalance(){ return 1; } public double calCost(){ return 1; } } class UserRecords { private ArrayList<CallRecord> callingInCityRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> callingInProvinceRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> callingInLandRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInCityRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInProvinceRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInLandRecords = new ArrayList<CallRecord>(); private ArrayList<MessageRecord> sendMessageRecords = new ArrayList<MessageRecord>(); private ArrayList<MessageRecord> receiveMessageRecords = new ArrayList<MessageRecord>(); public ArrayList<MessageRecord> getSendMessageRecords() { return sendMessageRecords; } public ArrayList<MessageRecord> getReceiveMessageRecords() { return receiveMessageRecords; } public ArrayList<CallRecord> getCallingInCityRecords() { return callingInCityRecords; } public ArrayList<CallRecord> getCallingInProvinceRecords() { return callingInProvinceRecords; } public ArrayList<CallRecord> getCallingInLandRecords() { return callingInLandRecords; } public ArrayList<CallRecord> getAnswerInCityRecords() { return answerInCityRecords; } public ArrayList<CallRecord> getAnswerInProvinceRecords() { return answerInProvinceRecords; } public ArrayList<CallRecord> getAnswerInLandRecords() { return answerInLandRecords; } public void addCallingInCityRecords(CallRecord callRecord) { callingInCityRecords.add(callRecord); } public void addCallingInProvinceRecords(CallRecord callRecord) { callingInProvinceRecords.add(callRecord); } public void addCallingInLandRecords(CallRecord callRecord) { callingInLandRecords.add(callRecord); } public void addAnswerInCityRecords(CallRecord callRecord) { answerInCityRecords.add(callRecord); } public void addAnswerInProvinceRecords(CallRecord callRecord) { answerInProvinceRecords.add(callRecord); } public void addAnswerInLandRecords(CallRecord callRecord) { answerInLandRecords.add(callRecord); } public void addSendMessageRecords(CallRecord callRecord) { } public void addReceiveMessageRecords(CallRecord callRecord) { } public void addSendMessageRecords(MessageRecord messageRecord) { sendMessageRecords.add(messageRecord); } public void addReceiveMessageRecords(MessageRecord messageRecord) { receiveMessageRecords.add(messageRecord); } }
遇到的困难：
本次题目系列是由老师降低难度为我们准备的，咯啊是为我们准备好了类图，为我们解决的设计问题，但是看懂类图是我遇到的第一份困难，然后就是计费方法的实现，因为计费规则比较复杂，所以浪费了很大部分时间，最后遇到的困难就是输入数据出理，因为还需要使用正则表达式，所以处理数据花了很长时间，因为要看懂类图和了解类之间的关系才可以处理数据，所以这是最大的困难，最后我遇到了个小bug，导致有个点过不去，是我傻逼了，要每次记录单独计算时间，我把所有时间加在一起计算了。
解决方法：最主要的就是看懂老师给的类图，如果看不懂真的就写不明白，你根本不知道这个数据怎么用，放到哪个里面，用什么来计算。
（2）7-2
代码：
import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.Scanner; public class Main { public static void main(String[] args) { ArrayList<User> Users1 = new ArrayList<>(); ArrayList<User> Users2 = new ArrayList<>(); String callNumber; String answerNumber; String startTime; String endTime; String line; CallRecord callRecord; LandPhoneInCityRule_1 a0 =new LandPhoneInCityRule_1(); LandPhoneInProvinceRule_3 a1 = new LandPhoneInProvinceRule_3(); LandPhoneInlandRule_6 a2 =new LandPhoneInlandRule_6(); shoufei_2 b1 = new shoufei_2(); ArrayList<ChargeRule> c = new ArrayList<>(); c.add(a0); c.add(a1); c.add(a2); c.add(b1); LandlinePhoneCharging UserAAA= new LandlinePhoneCharging(); UserAAA.setChargeRules(c); MPhoneCharging UserBBB = new MPhoneCharging(); UserBBB.setChargeRules(c); Scanner a = new Scanner(System.in); String kh = ("u-0791\\d{7,8}\\s0"); String dh = ("[u]-1\\d{10}\\s[1]"); String jlzz = "[t]-0791[0-9]{7,8}\\s0[0-9]{9,11}\\s((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9]" + "[0-9]{3})\\.(((0?[13578]|1[02])\\.(0?[1-9]|[12][0-9]|3[01]))|(([469]|11)\\.([1-9]|[12][0-9]|30))|" + "(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|[13579][26])|(([48]|[2468][048]|[3579]" + "[26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])\\s((([0-9]{3}[1-9]|[0-9]{2}[1-9]" + "[0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.((([13578]|1[02])\\.([1-9]|[12][0-9]|3[01]))|(([469]|11)\\." + "([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|[13579][26])|(([48]" + "|[2468][048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])"; String jlzd = "[t]-0[0-9]{9,11}\\s1[0-9]{10}\\s0[0-9]{2,3}\\s((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9]" + "[0-9]{2}|[1-9][0-9]{3})\\.(((0?[13578]|1[02])\\.(0?[1-9]|[12][0-9]|3[01]))|(([469]|11)\\.([1-9]|[12]" + "[0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|[13579][26])|(([48]|[2468]" + "[048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])\\s((([0-9]{3}[1-9]" + "|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.((([13578]|1[02])\\.([1-9]|[12][0-9]|3[01]))" + "|(([469]|11)\\.([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|" + "[13579][26])|(([48]|[2468][048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])"; String jldd = "[t]-1[0-9]{10}\\s0[0-9]{2,3}\\s1[0-9]{10}\\s0[0-9]{2,3}\\s((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|" + "[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.(((0?[13578]|1[02])\\.(0?[1-9]|[12][0-9]|3[01]))|(([469]|11)\\." + "([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|[13579][26])|" + "(([48]|[2468][048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])\\s" + "((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.((([13578]|1[02])\\.([1-9]" + "|[12][0-9]|3[01]))|(([469]|11)\\.([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})" + "([48]|[2468][048]|[13579][26])|(([48]|[2468][048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3])" + ":([0-5][0-9]):([0-5][0-9])"; String jldz = "[t]-1[0-9]{10}\\s0[0-9]{2,3}\\s0[0-9]{9,11}\\s((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9]" + "[0-9]{2}|[1-9][0-9]{3})\\.(((0?[13578]|1[02])\\.(0?[1-9]|[12][0-9]|3[01]))|(([469]|11)\\.([1-9]|[12]" + "[0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|[13579][26])|(([48]|[2468]" + "[048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])\\s((([0-9]{3}[1-9]" + "|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})\\.((([13578]|1[02])\\.([1-9]|[12][0-9]|3[01]))" + "|(([469]|11)\\.([1-9]|[12][0-9]|30))|(2\\.([1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})([48]|[2468][048]|" + "[13579][26])|(([48]|[2468][048]|[3579][26])00))\\.2\\.29))\\s([0-1]?[0-9]|2[0-3]):([0-5][0-9])" + ":([0-5][0-9])"; line = a.nextLine(); while (!line.equals("end")){ if (line.matches(kh)) { Cun(Users1,line); } else if(line.matches(dh)){ Cun(Users2,line); }else if(line.matches(jlzz)){ String[] jl1 = line.split("-"); jl1 = jl1[1].split(" "); callNumber = jl1[0]; answerNumber = jl1[1]; callRecord = new CallRecord(); try{ SimpleDateFormat aq2 = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss"); startTime = jl1[2]+" "+jl1[3]; endTime = jl1[4]+" "+jl1[5]; Date stareTimeDate = aq2.parse(startTime); Date endTimeDate = aq2.parse(endTime); callRecord.setStartTime(stareTimeDate); callRecord.setEndTime(endTimeDate); callRecord.setCallingNumber(callNumber); callRecord.setAnswerNumber(answerNumber); callRecord.setCallingAddressAreaCode(callNumber.substring(0,4)); callRecord.setAnswerAddressAreaCode(answerNumber.substring(0,4)); for(User user: Users1){//存通话记录 if(user.getNumber().equals(callNumber)&&endTimeDate.getTime()>stareTimeDate.getTime()){ if(user.getNumber().substring(0,4).equals(callRecord.getAnswerAddressAreaCode())){ user.getUserRecords().addCallingInCityRecords(callRecord); }else if(callRecord.getAnswerNumber().startsWith("079")|| callRecord.getAnswerNumber().startsWith("0701")){ user.getUserRecords().addCallingInProvinceRecords(callRecord); }else{ user.getUserRecords().addCallingInLandRecords(callRecord); } } } } catch (ParseException e) { throw new RuntimeException(e); } } else if (line.matches(jlzd)) { String[] jl1 = line.split("-"); jl1 = jl1[1].split(" "); callNumber = jl1[0]; answerNumber = jl1[1]; callRecord = new CallRecord(); try{ SimpleDateFormat aq2 = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss"); startTime = jl1[3]+" "+jl1[4]; endTime = jl1[5]+" "+jl1[6]; Date stareTimeDate = aq2.parse(startTime); Date endTimeDate = aq2.parse(endTime); callRecord.setStartTime(stareTimeDate); callRecord.setEndTime(endTimeDate); callRecord.setCallingNumber(callNumber); callRecord.setAnswerNumber(answerNumber); callRecord.setCallingAddressAreaCode(callNumber.substring(0,4)); callRecord.setAnswerAddressAreaCode(jl1[2]); for(User user: Users1){//存通话记录 shineiboda(Users2, callNumber, answerNumber, callRecord, stareTimeDate, endTimeDate, user); } for(User userA: Users2){ if(userA.getNumber().equals(answerNumber)){ if(!callRecord.getAnswerAddressAreaCode().startsWith("079")&&!callRecord.getAnswerAddressAreaCode().startsWith("0701")){ userA.getUserRecords().addAnswerInLandRecords(callRecord); } } } } catch (ParseException e) { throw new RuntimeException(e); } }else if(line.matches(jldd)){ String[] jl1 = line.split("-"); jl1 = jl1[1].split(" "); callNumber = jl1[0]; answerNumber = jl1[2]; callRecord = new CallRecord(); try{ SimpleDateFormat aq2 = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss"); startTime = jl1[4]+" "+jl1[5]; endTime = jl1[6]+" "+jl1[7]; Date stareTimeDate = aq2.parse(startTime); Date endTimeDate = aq2.parse(endTime); callRecord.setStartTime(stareTimeDate); callRecord.setEndTime(endTimeDate); callRecord.setCallingNumber(callNumber); callRecord.setCallingAddressAreaCode(jl1[1]); callRecord.setAnswerNumber(answerNumber); callRecord.setAnswerAddressAreaCode(jl1[3]); for(User user: Users2){//存通话记录 if(user.getNumber().equals(callNumber)&&endTimeDate.getTime()>stareTimeDate.getTime()){ if(callRecord.getCallingAddressAreaCode().equals("0791")){//电话在市内 shineiboda(Users2, callNumber, answerNumber, callRecord, stareTimeDate, endTimeDate, user); } else if (callRecord.getCallingAddressAreaCode().startsWith("079")|| callRecord.getCallingAddressAreaCode().startsWith("0701")) {//在省内打电话 user.getUserRecords().CallInP(callRecord); }else{//省外打电话 user.getUserRecords().callInL(callRecord); } } } for(User userA: Users2){ if(userA.getNumber().equals(answerNumber)){ if(!callRecord.getAnswerAddressAreaCode().startsWith("079")&&!callRecord.getAnswerAddressAreaCode().startsWith("0701")){ userA.getUserRecords().addAnswerInLandRecords(callRecord); } } } } catch (ParseException e) { throw new RuntimeException(e); } } else if(line.matches(jldz)){ String[] jl1 = line.split("-"); jl1 = jl1[1].split(" "); callNumber = jl1[0]; answerNumber = jl1[2]; callRecord = new CallRecord(); try{ SimpleDateFormat aq2 = new SimpleDateFormat("yyyy.MM.dd HH:mm:ss"); startTime = jl1[3]+" "+jl1[4]; endTime = jl1[5]+" "+jl1[6]; Date stareTimeDate = aq2.parse(startTime); Date endTimeDate = aq2.parse(endTime); callRecord.setStartTime(stareTimeDate); callRecord.setEndTime(endTimeDate); callRecord.setCallingNumber(callNumber); callRecord.setCallingAddressAreaCode(jl1[1]); callRecord.setAnswerNumber(answerNumber); callRecord.setAnswerAddressAreaCode(jl1[2].substring(0,4)); for(User user: Users2){//存通话记录 if(user.getNumber().equals(callNumber)&&endTimeDate.getTime()>stareTimeDate.getTime()){ if(callRecord.getCallingAddressAreaCode().equals("0791")){//电话在市内 if(user.getNumber().equals(callNumber)&&endTimeDate.getTime()>stareTimeDate.getTime()){ if(callRecord.getCallingAddressAreaCode().equals(callRecord.getAnswerAddressAreaCode())){ user.getUserRecords().addCallingInCityRecords(callRecord); }else if(callRecord.getAnswerAddressAreaCode().startsWith("079")|| callRecord.getAnswerAddressAreaCode().startsWith("0701")){ user.getUserRecords().addCallingInProvinceRecords(callRecord); }else{ user.getUserRecords().addCallingInLandRecords(callRecord); } } } else if (callRecord.getCallingAddressAreaCode().startsWith("079")|| callRecord.getCallingAddressAreaCode().startsWith("0701")) {//在省内打电话 user.getUserRecords().CallInP(callRecord); }else{ user.getUserRecords().callInL(callRecord); } } } } catch (ParseException e) { throw new RuntimeException(e); } } line = a.nextLine(); } for(User user:Users1){ user.setChargeMode(UserAAA); } for(User user:Users2){ user.setChargeMode(UserBBB); } for(int i=0;i<Users1.size()-1;i++){ for(int j=i+1;j<Users1.size();j++){ if(Double.parseDouble(Users1.get(i).getNumber())>Double.parseDouble(Users1.get(j).getNumber())){ User con; con = Users1.get(i); Users1.set(i,Users1.get(j)); Users1.set(j,con); } } } for(int i=0;i<Users2.size()-1;i++){ for(int j=i+1;j<Users2.size();j++){ if(Double.parseDouble(Users2.get(i).getNumber())>Double.parseDouble(Users2.get(j).getNumber())){ User con; con = Users2.get(i); Users2.set(i,Users2.get(j)); Users2.set(j,con); } } } for(User user: Users1){ user.setBalance(user.getBalance()-user.getChargeMode().calCost(user.getUserRecords())); System.out.printf("%s ",user.getNumber()); System.out.printf("%.1f ",80-user.getBalance()); System.out.printf("%.1f\n",user.getBalance()); } for(User user: Users2){ user.setBalance(user.getBalance()-user.getChargeMode().calCost(user.getUserRecords())); System.out.printf("%s ",user.getNumber()); System.out.printf("%.1f ",85-user.getBalance()); System.out.printf("%.1f\n",user.getBalance()); } } public static void shineiboda(ArrayList<User> users2, String callNumber, String answerNumber, CallRecord callRecord, Date stareTimeDate, Date endTimeDate, User user) { if(user.getNumber().equals(callNumber)&&endTimeDate.getTime()>stareTimeDate.getTime()){ if(callRecord.getCallingAddressAreaCode().equals(callRecord.getAnswerAddressAreaCode())){ user.getUserRecords().addCallingInCityRecords(callRecord); for(User userA: users2){ } }else if(callRecord.getAnswerAddressAreaCode().startsWith("079")|| callRecord.getAnswerAddressAreaCode().startsWith("0701")){ user.getUserRecords().addCallingInProvinceRecords(callRecord); }else{ user.getUserRecords().addCallingInLandRecords(callRecord); } } } public static void Cun(ArrayList<User> Users, String line){ int numC = 0; String[] kh1 = line.split("-"); kh1 = kh1[1].split(" "); for(User x:Users){ if(x.getNumber().equals(kh1[0])){ numC = 1; break; } } if(numC == 0){ User user = new User(); user.setNumber((kh1[0])); Users.add(user); } } } abstract class CallChargeRule extends ChargeRule{//计费规则父类 public double calCost(ArrayList<CallRecord> callRecords){ return 1; } public long getTime(ArrayList<CallRecord> callRecords){ long miao = 0; long fen = 0; long sum= 0; for(int i=0;i<callRecords.size();i++){ callRecords.get(i); miao=(callRecords.get(i).getEndTime().getTime()-callRecords.get(i).getStartTime().getTime())/1000; fen = miao / 60; if(miao % 60!=0){ fen = fen + 1; } sum=sum+fen; } return sum; } } class CallRecord extends CommunicationRecord {//具体的某一通话记录类 private Date StartTime; private Date endTime; private String callingAddressAreaCode; private String answerAddressAreaCode; public Date getStartTime() { return StartTime; } public void setStartTime(Date startTime) { StartTime = startTime; } public Date getEndTime() { return endTime; } public void setEndTime(Date endTime) { this.endTime = endTime; } public String getCallingAddressAreaCode() { return callingAddressAreaCode; } public void setCallingAddressAreaCode(String callingAddressAreaCode) { this.callingAddressAreaCode = callingAddressAreaCode; } public String getAnswerAddressAreaCode() { return answerAddressAreaCode; } public void setAnswerAddressAreaCode(String answerAddressAreaCode) { this.answerAddressAreaCode = answerAddressAreaCode; } } abstract class ChargeMode {//计费规则的合计 private ArrayList<ChargeRule> chargeRules = new ArrayList<ChargeRule>(); public ArrayList<ChargeRule> getChargeRules() { return chargeRules; } public void setChargeRules(ArrayList<ChargeRule> chargeRules) { this.chargeRules = chargeRules; } public double calCost(UserRecords userRecords){ return 1; } public double getMonthlyRen(){ return 1; } } abstract class ChargeRule { public double calCost(ArrayList<CallRecord> callRecords){ return 1; } } abstract class CommunicationRecord { private String callingNumber; private String answerNumber; public String getCallingNumber() { return callingNumber; } public void setCallingNumber(String callingNumber) { this.callingNumber = callingNumber; } public String getAnswerNumber() { return answerNumber; } public void setAnswerNumber(String answerNumber) { this.answerNumber = answerNumber; } } class LandlinePhoneCharging extends ChargeMode { private double monthlyRent = 20; @Override public double calCost(UserRecords userRecords){//计算消费 double cost1,cost2,cost3; cost1 = getChargeRules().get(0).calCost(userRecords.getCallingInCityRecords()); cost2 = getChargeRules().get(1).calCost(userRecords.getCallingInProvinceRecords()); cost3 = getChargeRules().get(2).calCost(userRecords.getCallingInLandRecords()); return cost1 + cost2 + cost3 + monthlyRent; } @Override public double getMonthlyRen(){ return monthlyRent; } } class LandPhoneInCityRule_1 extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long sum = getTime(callRecords); return sum*0.1; } } class LandPhoneInlandRule_6 extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long sum = getTime(callRecords); return sum*0.6; } } class LandPhoneInProvinceRule_3 extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long sum = getTime(callRecords); return sum*0.3; } } class MessageRecord extends CommunicationRecord{ private String message; public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } } class MPhoneCharging extends ChargeMode{ private double monthlyRent = 15; @Override public double calCost(UserRecords userRecords){//计算消费 double cost1,cost2,cost3,cost4,cost5,cost6; cost1 = getChargeRules().get(0).calCost(userRecords.getCallingInCityRecords()); cost2 = getChargeRules().get(3).calCost(userRecords.getCallingInProvinceRecords()); cost3 = getChargeRules().get(1).calCost(userRecords.getCallingInLandRecords()); cost4 = getChargeRules().get(1).calCost(userRecords.getCallInP()); cost5 = getChargeRules().get(2).calCost(userRecords.getCallInL()); cost6 = getChargeRules().get(1).calCost(userRecords.getAnswerInLandRecords()); return cost1 + cost2 + cost3+ cost4+ cost5+ cost6 + monthlyRent; } @Override public double getMonthlyRen(){ return monthlyRent; } } class shoufei_2 extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ Long sum = getTime(callRecords); return sum*0.2; } } class User { private UserRecords userRecords = new UserRecords(); private double balance = 100; private ChargeMode chargeMode; private String number ; public UserRecords getUserRecords() { return userRecords; } public void setUserRecords(UserRecords userRecords) { this.userRecords = userRecords; } public double getBalance() { return balance; } public void setBalance(double balance) { this.balance = balance; } public ChargeMode getChargeMode() { return chargeMode; } public void setChargeMode(ChargeMode chargeMode) { this.chargeMode = chargeMode; } public String getNumber() { return number; } public void setNumber(String number) { this.number = number; } public double calBalance(){ return 1; } public double calCost(){ return 1; } } class UserRecords { private ArrayList<CallRecord> callingInCityRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> callingInProvinceRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> callingInLandRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> callInP = new ArrayList<CallRecord>(); private ArrayList<CallRecord> CallInL = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInCityRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInProvinceRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInLandRecords = new ArrayList<CallRecord>(); private ArrayList<MessageRecord> sendMessageRecords = new ArrayList<MessageRecord>(); private ArrayList<MessageRecord> receiveMessageRecords = new ArrayList<MessageRecord>(); public ArrayList<MessageRecord> getSendMessageRecords() { return sendMessageRecords; } public ArrayList<MessageRecord> getReceiveMessageRecords() { return receiveMessageRecords; } public ArrayList<CallRecord> getCallingInCityRecords() { return callingInCityRecords; } public ArrayList<CallRecord> getCallingInProvinceRecords() { return callingInProvinceRecords; } public ArrayList<CallRecord> getCallingInLandRecords() { return callingInLandRecords; } public ArrayList<CallRecord> getCallInP() { return callInP; } public ArrayList<CallRecord> getCallInL() { return CallInL; } public ArrayList<CallRecord> getAnswerInCityRecords() { return answerInCityRecords; } public ArrayList<CallRecord> getAnswerInProvinceRecords() { return answerInProvinceRecords; } public ArrayList<CallRecord> getAnswerInLandRecords() { return answerInLandRecords; } public void addCallingInCityRecords(CallRecord callRecord) { callingInCityRecords.add(callRecord); } public void addCallingInProvinceRecords(CallRecord callRecord) { callingInProvinceRecords.add(callRecord); } public void addCallingInLandRecords(CallRecord callRecord) { callingInLandRecords.add(callRecord); } public void CallInP(CallRecord callRecord) { callInP.add(callRecord); } public void callInL(CallRecord callRecord) { CallInL.add(callRecord); } public void addAnswerInCityRecords(CallRecord callRecord) { answerInCityRecords.add(callRecord); } public void addAnswerInProvinceRecords(CallRecord callRecord) { answerInProvinceRecords.add(callRecord); } public void addAnswerInLandRecords(CallRecord callRecord) { answerInLandRecords.add(callRecord); } public void addSendMessageRecords(CallRecord callRecord) { } public void addReceiveMessageRecords(CallRecord callRecord) { } public void addSendMessageRecords(MessageRecord messageRecord) { sendMessageRecords.add(messageRecord); } public void addReceiveMessageRecords(MessageRecord messageRecord) { receiveMessageRecords.add(messageRecord); } }
遇到的困难：
此题在上一道题的基础上增加了移动电话，是处理数据的困难有又增大了，计费规则更多，需要更多的正则表达式，但是在上一道题的基础上，此题没有更多的困难。
解决方法：
认真看懂类图，类图看懂真的不难，而且扩展性很强，所以才可以使用上一道题的基础，计费方法还是靠逻辑
（3）7-3
代码：
import java.util.ArrayList; import java.util.Date; import java.util.Scanner; public class Main { public static void main(String[] args) { ArrayList<User> Users3 = new ArrayList<>(); String line; ArrayList<MessageChargeRule> d = new ArrayList<MessageChargeRule>(); SendMessageRule c1=new SendMessageRule(); d.add(c1); LandlinePhoneCharging UserAAA= new LandlinePhoneCharging(); MPhoneCharging UserBBB = new MPhoneCharging(); Mess Userccc = new Mess(); Userccc.setChargeRuless(d); Scanner a = new Scanner(System.in); String dx = ("[u]-1\\d{10}\\s[3]"); String jldx = "[m]-1[0-9]{10}\\s1[0-9]{10}\\s[[A-Z][a-z][0-9]\\s,.]+" ; line = a.nextLine(); while (!line.equals("end")){ if (line.matches(dx)) { Cun(Users3,line); } else if(line.matches(jldx)){ String[] jl1 = line.split("-"); jl1 = jl1[1].split(" "); MessageRecord messageRecord= new MessageRecord(); messageRecord.setMessage(line.substring(26)); messageRecord.setCallingNumber(jl1[0]); messageRecord.setAnswerNumber(jl1[1]); for(User user: Users3){//存通话记录 if(user.getNumber().equals(messageRecord.getCallingNumber())){ user.getUserRecords().addSendMessageRecords(messageRecord); } } } line = a.nextLine(); } for(int i=0;i<Users3.size()-1;i++){ for(int j=i+1;j<Users3.size();j++){ if(Double.parseDouble(Users3.get(i).getNumber())>Double.parseDouble(Users3.get(j).getNumber())){ User con; con = Users3.get(i); Users3.set(i,Users3.get(j)); Users3.set(j,con); } } } for(User user:Users3){ user.setChargeMode(Userccc); } for(User user: Users3){ user.setBalance(user.getBalance()-user.getChargeMode().calCost(user.getUserRecords())); System.out.printf("%s ",user.getNumber()); System.out.printf("%.1f ",100-user.getBalance()); System.out.printf("%.1f\n",user.getBalance()); } } public static void shineiboda(ArrayList<User> users2, String callNumber, String answerNumber, CallRecord callRecord, Date stareTimeDate, Date endTimeDate, User user) { if(user.getNumber().equals(callNumber)&&endTimeDate.getTime()>stareTimeDate.getTime()){ if(callRecord.getCallingAddressAreaCode().equals(callRecord.getAnswerAddressAreaCode())){ user.getUserRecords().addCallingInCityRecords(callRecord); for(User userA: users2){ } }else if(callRecord.getAnswerAddressAreaCode().startsWith("079")|| callRecord.getAnswerAddressAreaCode().startsWith("0701")){ user.getUserRecords().addCallingInProvinceRecords(callRecord); }else{ user.getUserRecords().addCallingInLandRecords(callRecord); } } } public static void Cun(ArrayList<User> Users, String line){ int numC = 0; String[] kh1 = line.split("-"); kh1 = kh1[1].split(" "); for(User x:Users){ if(x.getNumber().equals(kh1[0])){ numC = 1; break; } } if(numC == 0){ User user = new User(); user.setNumber((kh1[0])); Users.add(user); } } } abstract class CallChargeRule extends ChargeRule{//计费规则父类 public double calCost(ArrayList<CallRecord> callRecords){ return 1; } public long getTime(ArrayList<CallRecord> callRecords){ long miao = 0; long fen = 0; long sum= 0; for(int i=0;i<callRecords.size();i++){ callRecords.get(i); miao=(callRecords.get(i).getEndTime().getTime()-callRecords.get(i).getStartTime().getTime())/1000; fen = miao / 60; if(miao % 60!=0){ fen = fen + 1; } sum=sum+fen; } return sum; } } class CallRecord extends CommunicationRecord {//具体的某一通话记录类 private Date StartTime; private Date endTime; private String callingAddressAreaCode; private String answerAddressAreaCode; public Date getStartTime() { return StartTime; } public void setStartTime(Date startTime) { StartTime = startTime; } public Date getEndTime() { return endTime; } public void setEndTime(Date endTime) { this.endTime = endTime; } public String getCallingAddressAreaCode() { return callingAddressAreaCode; } public void setCallingAddressAreaCode(String callingAddressAreaCode) { this.callingAddressAreaCode = callingAddressAreaCode; } public String getAnswerAddressAreaCode() { return answerAddressAreaCode; } public void setAnswerAddressAreaCode(String answerAddressAreaCode) { this.answerAddressAreaCode = answerAddressAreaCode; } } abstract class ChargeMode {//计费规则的合计 private ArrayList<CallChargeRule> chargeRules = new ArrayList<CallChargeRule>(); private ArrayList<MessageChargeRule> chargeRuless = new ArrayList<MessageChargeRule>(); public ArrayList<CallChargeRule> getChargeRules() { return chargeRules; } public ArrayList<MessageChargeRule> getChargeRuless() { return chargeRuless; } public void setChargeRules(ArrayList<CallChargeRule> chargeRules) { this.chargeRules = chargeRules; } public void setChargeRuless(ArrayList<MessageChargeRule> chargeRuless) { this.chargeRuless = chargeRuless; } public double calCost(UserRecords userRecords){ return 1; } public double getMonthlyRen(){ return 1; } } abstract class ChargeRule { } abstract class CommunicationRecord { private String callingNumber; private String answerNumber; public String getCallingNumber() { return callingNumber; } public void setCallingNumber(String callingNumber) { this.callingNumber = callingNumber; } public String getAnswerNumber() { return answerNumber; } public void setAnswerNumber(String answerNumber) { this.answerNumber = answerNumber; } } class LandlinePhoneCharging extends ChargeMode { private double monthlyRent = 20; @Override public double calCost(UserRecords userRecords){//计算消费 double cost1,cost2,cost3; cost1 = getChargeRules().get(0).calCost(userRecords.getCallingInCityRecords()); cost2 = getChargeRules().get(1).calCost(userRecords.getCallingInProvinceRecords()); cost3 = getChargeRules().get(2).calCost(userRecords.getCallingInLandRecords()); return cost1 + cost2 + cost3 + monthlyRent; } @Override public double getMonthlyRen(){ return monthlyRent; } } class LandPhoneInCityRule_1 extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long sum = getTime(callRecords); return sum*0.1; } } class LandPhoneInlandRule_6 extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long sum = getTime(callRecords); return sum*0.6; } } class LandPhoneInProvinceRule_3 extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ long sum = getTime(callRecords); return sum*0.3; } } class Mess extends ChargeMode{ private double monthlyRent = 0; @Override public double calCost(UserRecords userRecords){//计算消费 double cost1; cost1 = getChargeRuless().get(0).calCost(userRecords.getSendMessageRecords()); return cost1 + monthlyRent; } @Override public double getMonthlyRen(){ return monthlyRent; } } class MessageChargeRule extends ChargeRule{ public double calCost(ArrayList<MessageRecord> messageRecords){ return 0; } } class MessageRecord extends CommunicationRecord{ private String message; public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } } class MPhoneCharging extends ChargeMode{ private double monthlyRent = 15; @Override public double calCost(UserRecords userRecords){//计算消费 double cost1,cost2,cost3,cost4,cost5,cost6; cost1 = getChargeRules().get(0).calCost(userRecords.getCallingInCityRecords()); cost2 = getChargeRules().get(3).calCost(userRecords.getCallingInProvinceRecords()); cost3 = getChargeRules().get(1).calCost(userRecords.getCallingInLandRecords()); cost4 = getChargeRules().get(1).calCost(userRecords.getCallInP()); cost5 = getChargeRules().get(2).calCost(userRecords.getCallInL()); cost6 = getChargeRules().get(1).calCost(userRecords.getAnswerInLandRecords()); return cost1 + cost2 + cost3+ cost4+ cost5+ cost6 + monthlyRent; } @Override public double getMonthlyRen(){ return monthlyRent; } } class SendMessageRule extends MessageChargeRule { public double calCost(ArrayList<MessageRecord> messageRecords){ int num = 0; double cost; for(MessageRecord a : messageRecords){ int length = a.getMessage().length(); int sum = length/10; if(length%10!=0){ sum++; } num = num+sum; } if(num<=3){ cost = num*0.1; } else if (num>3&&num<=5) { cost = 0.3 + (num - 3) * 0.2; }else { cost = 0.7 + (num-5) * 0.3; } return cost; } } class shoufei_2 extends CallChargeRule{ @Override public double calCost(ArrayList<CallRecord> callRecords){ Long sum = getTime(callRecords); return sum*0.2; } } class User { private UserRecords userRecords = new UserRecords(); private double balance = 100; private ChargeMode chargeMode; private String number ; public UserRecords getUserRecords() { return userRecords; } public void setUserRecords(UserRecords userRecords) { this.userRecords = userRecords; } public double getBalance() { return balance; } public void setBalance(double balance) { this.balance = balance; } public ChargeMode getChargeMode() { return chargeMode; } public void setChargeMode(ChargeMode chargeMode) { this.chargeMode = chargeMode; } public String getNumber() { return number; } public void setNumber(String number) { this.number = number; } public double calBalance(){ return 1; } public double calCost(){ return 1; } } class UserRecords { private ArrayList<CallRecord> callingInCityRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> callingInProvinceRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> callingInLandRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> callInP = new ArrayList<CallRecord>(); private ArrayList<CallRecord> CallInL = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInCityRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInProvinceRecords = new ArrayList<CallRecord>(); private ArrayList<CallRecord> answerInLandRecords = new ArrayList<CallRecord>(); private ArrayList<MessageRecord> sendMessageRecords = new ArrayList<MessageRecord>(); private ArrayList<MessageRecord> receiveMessageRecords = new ArrayList<MessageRecord>(); public ArrayList<MessageRecord> getSendMessageRecords() { return sendMessageRecords; } public ArrayList<MessageRecord> getReceiveMessageRecords() { return receiveMessageRecords; } public ArrayList<CallRecord> getCallingInCityRecords() { return callingInCityRecords; } public ArrayList<CallRecord> getCallingInProvinceRecords() { return callingInProvinceRecords; } public ArrayList<CallRecord> getCallingInLandRecords() { return callingInLandRecords; } public ArrayList<CallRecord> getCallInP() { return callInP; } public ArrayList<CallRecord> getCallInL() { return CallInL; } public ArrayList<CallRecord> getAnswerInCityRecords() { return answerInCityRecords; } public ArrayList<CallRecord> getAnswerInProvinceRecords() { return answerInProvinceRecords; } public ArrayList<CallRecord> getAnswerInLandRecords() { return answerInLandRecords; } public void addCallingInCityRecords(CallRecord callRecord) { callingInCityRecords.add(callRecord); } public void addCallingInProvinceRecords(CallRecord callRecord) { callingInProvinceRecords.add(callRecord); } public void addCallingInLandRecords(CallRecord callRecord) { callingInLandRecords.add(callRecord); } public void CallInP(CallRecord callRecord) { callInP.add(callRecord); } public void callInL(CallRecord callRecord) { CallInL.add(callRecord); } public void addAnswerInCityRecords(CallRecord callRecord) { answerInCityRecords.add(callRecord); } public void addAnswerInProvinceRecords(CallRecord callRecord) { answerInProvinceRecords.add(callRecord); } public void addAnswerInLandRecords(CallRecord callRecord) { answerInLandRecords.add(callRecord); } public void addSendMessageRecords(CallRecord callRecord) { } public void addReceiveMessageRecords(CallRecord callRecord) { } public void addSendMessageRecords(MessageRecord messageRecord) { sendMessageRecords.add(messageRecord); } public void addReceiveMessageRecords(MessageRecord messageRecord) { receiveMessageRecords.add(messageRecord); } }
遇到的困难：
再上两道题的基础和经验上，本题非常简单，问题还是数据处理和计费方式，因为每次印东西的加入只有这两部分发生改变。
解决方法：
看到你那个类图都好说！
javafx：
因为这是新接触的东西，所以学学习上遇到些困难，但是都千篇一律，就是对已经处理好的数据在布局上的处理，是界面更加好看和实用，困难就是方法的学习，编写，了解方法，并且知道方法如何使用。
2.在学习中学习到并使用的知识点
（1）继承与多态
继承使你可以定义一个通用的类（父类），之后通过继承得到一个更特殊的类（子类）
什么时候可以继承呢？
一般继承用于两种语境
（1）整体与部分之间的关系（不常用）
例如计算机和cpu的关系，我们一般采用聚集表示
因为继承的耦合性大于聚合的耦合性
（2）大类到小类的关系
例如人类和教师，学生，工人之间的关系
（3）supper：关键字，指代父类，可以调用父类的普通方法和构造方法
复制兼容性原则：可以将子类的对象赋给父类的引用
方法重写：需要在子类中使用和父类重定义的方法的实现
多态：意味着父类型的变量可以引用子类型的对象
（2）抽象类和接口
抽象类是专门做父类的，不能创建对象
接口：接口被看作一种特殊的类，与抽象类相似，不能使用new对象
（3）javaFx
总结：
1.bug的主要来源：
自己的疏忽，发生一些细节的小问题，比如字符数字没有加‘ ’，这也是我起初没有注意最困扰我的问题，导致判断不通过
没有认真读题导致题意理解错误或有偏差
2.学习到了什么：
除了类和继承的相关知识点，在其它题目集中学会了使用正则表达式，字符串的分割，在做最近一次的作业中我起初是使用字符串的分割，但是没法实现要求的全部功能，后来学习了正则表达式来解决这个问题，在正则表达式的使用时也会遇到很多问题，需要的形式自己没法正确表达出来，只能通过不断的调试来寻找自己需要的表达式，在课堂上老师也是教会了我很多
3.心得体会：
这是接触java这门语言第三次写博客，这是我第三次写学习总结，总而言之这种总结方法对我来说起到很大的作用，这是我第三次写学习总结，我认为在梳理过后我对知识在脑海里梳理的更加清晰，有助于对这些知识点的再次使用，这也是我第一次编写博客，所以有很多表达不清楚的地方，我因为过于追求pta的分数，所以我很多时间都花在了题目集上，导致自己没有太多时间来编写学习总结和博客，所以我会在下次编写中进行优化，尽可能写出更好的学习总结以及博客，也是很感谢老师在课堂上和课堂下做出的贡献，网课的购买以及对我们免费的开放让我甚是感动。
关于Java，这是我在第一学期学习之后的第一次学习总结，我对java学习还是不够，所以还需要继续在课上课下继续努力，继续在优秀的代码中学习，多看教程，多培养自己的逻辑
4.小建议：
因为只学了一个学期所以我是一个新手，所以还不能给出太多的权威的建议，但是我还是总结出了一些经验，在语法通关的情况下，我们要尽可能去提升自己的逻辑推理能力和数学能力，因为只有这样才能去解决生活中的实际问题，逻辑能力就像基本功，所以我们的数学专业在这个方面就体现了很强的重要性，再有就是培养自己的兴趣，因为我能感觉到我只有在兴趣高涨的时候才能写进去代码，坐得住板凳才能写得出好代码，多去实践，很多人为了快速学会java而不去时间，不要把所有时间都放在学上，快餐式学习不可取，更多的是去自己编写代码，从而学好java
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