Java万年历实验报告

Java课程实验报告

姓名：易乃杰

学号：2110505171

作业要求：

编写一个万年历程序，要求能够查询历史时间，能够添加、查看、

删除备忘录。

项目概述：

这个项目是一个简单的Java万年历，可以实现所有年份的公历日期的查询，

并且在相应的日期做备忘录，以及可以显示当前的日期以及时间。

程序截图:

具体功能介绍：

（1）万年历查询：点击图形界面中年份钱下拉框用来调整要查询的年份，点击

月份前来调整要查询的月份，然后可以看到这个月的每一天所对应的星期。

（2）Clock功能：在万年历下面显示当前的年月日时间，相当于一个时钟的功

能。

（3）记事本功能。

设计与实现（需要附全部代码，GUI自动生成代码除外）：

1类的设计（继承、多态、数据结构）：核心类是CalendarWindow.

findPassWordDialog等。

2Java10；文件访问

2GUI（用户界面）：点下划线来表示GUI用户界面

6其他功能：（无）

程序代码:

packageapp;

importcalendar.CalendarWindow;

publicclassClient{

publicstaticvoidmain(String[]args)

newCalendarWindow().setVisible(true);

}

}

第一个包

packageaccount;

publicclassAccount{

privateStringname;

privateStringpassword;

publicAccount(Stringname,Stringpassword)

(

=name;

this.password=password;

}

publicStringgetName()

(

returnname;

}

publicvoidsetName(Stringname)

(

=name;

}

publicStringgetPassWord()

returnpassword;

}

publicvoidsetPassWord(Stringpassword)

this.password=password;

}

©Override

publicStringtoString(){

return"账户"+name+",密码"password;

}

©Override

publicbooleanequals(Objectobj){

if(this==obj)

returntrue;

if(obj==null)

returnfalse;

if(getClass()!=obj.getClass())

returnfalse;

Accountother=(Account)obj;

if(name==null){

if(!=null)

returnfalse;

}elseif(!name.equals())

returnfalse;

if(password==null){

if(other.passWord!=null)

returnfalse;

}elseif(!passWord.equals(other.passWord))

returnfalse;

returntrue;

}

)

第二个包(含三个类)

packagecalendar;

publicclassCalendarWindowextendsjavax.swing.JFrameimplements

Observer{

privateTimetime;

privateintyear;

privateintmonth;

privateintday;

privateWeekweek;

privateDatexcurrent;

privateILoginServiceloginService;

privatebooleanisLogin;

privatelEventServiceeventservice;

/**CreatesnewformTimeWindow*/

publicCalendarWindow(){

initComponents();

setLocationRelativeTo(null);

loginService=newLoginService();

eventService=newEventService();

init();

}

privatevoidinit(){

table.setGridColor(Color.GREEN);

table.setRowHeight(table.getRowHeight()*2+9);

time=newTime();

week=newWeek();

current=time.getSystemDate();

year=current.getYear();

month=current.getMonth();

day=current.getDay();

TimeUnitunit=time.getSystemTime();

hourText.setText(unit.getHour()+

secondText.setText(unit.getMinute()+"")；

initTable(current);

initComboBox();

initlnfoTextArea(current);

}

//初始化ComboBox

privatevoidinitComboBox(){

for(inti=0;i<=20;i++)

yearComboBox.addltem(current.getYear()-10+i);

yearComboBox.setSelectedlndex(IO);

monthComboBox.setSelectedlndex(current.getMonth()-1);

}

//初始化TextArea

privatevoidinitlnfoTextArea(Datexdate){

infoTextArea.setFont(newFont("楷体",Font.BOLD,16));

infoTextArea.setLineWrap(true);

infoTextArea.setColumns(15);

infoTextArea.setRows(8);

infoTextArea.setTabSize(IO);

infoTextArea.setText("【龙年】\n\n"+date.toString()+"\n"

+week.getWeek(date)+"\n\n\n"+"【忌讳】：无\n\n\n"

+"【适宜】：无\n\n");

}

//初始化table

privatevoidinitTable(Datextoday){

DefaultTableModelmodel=newDefaultTableModel();

model.addColumn("星期日")；

model.addColumn("星期一")；

model.addColumn("星期二)

model.addColumn("星期三”)；

model.addColumn("星期四")；

model.addColumn("星期五")；

model.addColumn("星期六")；

Weeksweekl=week.getWeek(newDatex(today.getYear(),

today.getMonth(),

1))；

Weeks[]weeks=Weeks.values();

intindex=0;

intnumx=1;

Object[]o=newObject[7];

for(inti=weeks.length-1;i>=0;i-){

if(weekl.equals(weeks[i]))

index=i;

}

for(intj=index;j<7;j++)

o[j]=numx++;

model.addRow(o);

for(inti=1;i<6;i++){

o=newObject[7];

for(intj=0;j<7;j++)

if(numx<=Uitll.lastday(today.getYear(),today.getMonth()))

o[j]=numx++;

model.addRow(o);

}

table.setModel(model);

}

privatevoidexitltemActionPerformed(java.awt.event.ActionEventevt){

System.exit(O);

}

privatevoidyearComboBoxActionPerformed(java.awt.event.ActionEvent

evt){

year=Integer.valueOf(yearComboBox.getSelectedltem().toString());

Datextemp=newDatex(year,month,1);

initTable(temp);

initlnfoTextArea(temp);

}

privatevoidmonthComboBoxActionPerformed(java.awt.event.ActionEvent

evt){

month=

lnteger.valueOf(monthComboBox.getSelectedltem().toString());

Datextemp=newDatex(year,month,1);

initTable(temp);

initlnfoTextArea(temp);

}

privatevoidtodayActionPerformed(java.awt.event.ActionEventevt){

initTable(time.getSystemDate());

initlnfoTextArea(current);

}

privatevoidloginButtonActionPerformed(java.awt.event.ActionEventevt){

isLogin=loginService.isOkOfLogin();

if(isLogin){

JOptionPane.showMessageDialog(this,"已登录，不能重复登录!")；

return;

}

newloginDialog(this,loginService).setVisible(true);

isLogin=loginService.isOkOfLogin();

if(isLogin)

setTitle("万年历（登录状态：*已登录*）"）;

}

privatevoideventButtonActionPerformed(java.awt.event.ActionEventevt)

(

if(isLogin)

newEventDialog(this,new

Datex(year,month,day),eventservice).setVisible(true);

else{

JOptionPane.showMessageDialog(this,“个人文档已力口密，如需访问

请先登录!")；

}

}

privatevoidtableMouseClicked(java.awt.event.MouseEventevt){

introw=table.getSelectedRow();

intcolumn=table.getSelectedColumn();

if(row<0||column<0)

return;

try(

table.setSelectionBackground(Color.WHITE);

table.setSelectionMode(1);

day=lnteger.valueOf(table.getValueAt(row,column).toStringQ);

initlnfoTextArea(newDatex(year,month,day));

}catch(Exceptione){

}

}

packagecalendar;

importdateandweek.Datex;

importuitl.Uitll;

publicclassCalendarx{

privateDatexcurrent;

publicCalendarx(intyear,intmonth,intday)

(

if(year<=0)

thrownewlllegalArgumentException("输入的年份有误!");

if(month<=0||month>12)

thrownewlllegalArgumentException("输入的月份有误!");

if(day<=0||day>Uitll.lastday(year,month))

thrownewlllegalArgumentException("输入的日期有误!");

current=newDatex(year,month,day);

}

publicDatexgetcurrent(){

returncurrent;

}

publicDatexgetPreviousDate(){

intyear=current.getYear();

intmonth=current.getMonth();

intday=current.getDay();

if(current.getDay()!=1)

returnnewDatex(year,month,day-1);

if(current.getMonth()==1)

returnnewDatex(year-1,12,Uitll.lastday(year-1,12));

returnnewDatex(year,month-1,Uitll.lastday(year,month-1));

}

publicDatexgetNextDate(){

intyear=current.getYear();

intmonth=current.getMonth();

intday=current.getDay();

if(Uitll.lastday(year,month)!=day)

returnnewDatex(year,month,day+1);

if(month==12){

returnnewDatex(year+1,1,1);

}

returnnewDatex(year,month+1,1);

}

//publicintlastday(intyear,intmonth)//使用数据表确定最后一天；

//{

//int[]m={0,31,28,31,30,31,30,31,31,30,31,30,31);

//if(year%4==0)

//m[2]=29;

//returnm[month];

//}

)

第三个包(含两个类)

packageevent;

publicclassEventDialogextendsjavax.swing.JDialog{

privateDatexcurrent;

privatelEventServiceeventservice;

privateJFrameparent;

publicEventDialog(JFrameparent,Datexcurrent,lEventService

eventservice){

super(parent,true);

initComponents();

setLocationRelativeTo(parent);

this.parent=parent;

this.eventservice=eventservice;

this.current=current;

init();

}

privatevoidinit(){

timeText.setText(current.toString());

try(

inti=0;

StringQstateStrings=newStringQ{"一般"，"较重要"，"很重要"};

Stringstatex=eventservice.getState(current);

stateText.setText(statex);

for(i=0;i<stateStrings.length;i++)

if(statex.equals(stateStrings[i]))

break;

stateComboBox.setSelectedlndex(i);

textArea.setText(eventService.readAII(current));

}catch(RuntimeExceptione){

stateText.setText("(无)");

stateitem.setEnabled(false);

}

}

privatevoidformWindowClosing(java.awt.event.WindowEventevt){

try(

Stringstate;

state=stateComboBox.getSelectedltem().toString();

Stringinfos=textArea.getText();

try(

if(eventservice.getState(current).equals(state)

&&eventservice.readAII(current).equals(infos)){

this.setVisible(false);

return;

}

}catch(Exceptione){

}

intresult=JOptionPane.showConfirmDialog(this,"今日日程已经改

变，是否保存?”，

"关闭信息框",JOptionPane.YES_NO_OPTION);

if(result==JOptionPane.YES_OPTION){

eventservice.saveAII(current,state,infos);

this.setVisible(false);

return;

}

}catch(RuntimeExceptione){

setVisible(false);

JOptionPane.showMessageDialog(parent,"建立"+

current.toString()

+"日程时出错，请重新建立!");

}

}

privatevoidstateComboBoxActionPerformed(java.awt.event.ActionEvent

evt){

Stringstate;

try(

state=stateComboBox.getSelectedltem().toString();

stateText.setText(state);

if(!stateltem.getText().equals。'(无)"))

stateitem.setEnabled(true);

}catch(RuntimeExceptione){

JOptionPane.showMessageDialog(parent,"设置日程状态出错!")；

}

}

privatevoidstateltemActionPerformed(java.awt.event.ActionEventevt){

Stringstate;

try(

if(stateText.getText().equals。'(无)”))

stateitem.setEnabled(false);

state=eventservice.getState(current);

stateText.setText(state);

}catch(RuntimeExceptione){

}

}

privatevoidexitltemActionPerformed(java.awt.event.ActionEventevt){

setVisible(false);

}

privatevoidsaveltemActionPerformed(java.awt.event.ActionEventevt){

Stringstate;

try(

state=stateComboBox.getSelectedltem().toString();

Stringinfos=textArea.getText();

eventservice.saveAII(current,state,infos);

}catch(RuntimeExceptione){

setVisible(false);

JOptionPane.showMessageDialog(parent,"建立"+

current.toStringO

+"日程时出错，请重新建立!)

)

}

packageevent;

publicclassEventServiceimplementslEventService{

©Override

publicStringreadAII(Datexdate)throwsRuntimeException{

if(date==null)

thrownewRuntimeExcep寸on("日期不能为null!");

Stringresult=

try(

Fileinputstreamin=newFilelnputStream("schedules/"

+date.toString());

Scannerscanner=newScanner(in);

if(scanner.hasNextLine())

scanner.nextLine();

while(scanner.hasNextLine())

result+=scanner.nextLine();

in.close();

}catch(lOExceptione){

thrownewRuntimeException。从"+date.toString()+”磁盘读信息

时出错!)

)

returnresult;

}

©Override

publicvoidsaveAII(Datexdate,Stringstate,Stringinfo)

throwsRuntimeException{

if(date==null||state==null)

thrownewRuntimeException("日期和日程状态都不能为null!");

try(

FileWriterout=newFileWriter("schedules/"+date.toString());

out.write(state+"\n"+info);

out.close();

}catch(lOExceptione1){

thrownewRuntimeException("信息写入"+date.toString()+"磁盘

时出错!)

)

}

©Override

publicStringgetState(Datexdate)throwsRuntimeException{

if(date==null)

thrownewRuntimeException("日期不能为null!");

Stringresult=

try(

Fileinputstreamin=newFileInputStream("schedules/"

+date.toString());

Scannerscanner=newScanner(in);

if(scanner.hasNextLine())

result=scanner.nextLine();

in.close();

}catch(lOExceptione){

thrownewRuntimeException。从"+date.toString()+”磁盘读信息

时出错!)

}

returnresult;

}

)

packageevent;

importdateandweek.Datex;

publicinterfaceIEventService{

〃保存此日日程

voidsaveAII(Datexdate,Stringstate,Stringinfo)throwsRuntimeException;

//读取此日日程

StringreadAII(Datexdate)throwsRuntimeException;

〃获得此日日程状态

StringgetState(Datexdate)throwsRuntimeException;

}

第四个包(含五个类)

packagelogin;

publicclassfindPassWordDialogextendsjavax.swing.JDialog{

privateILoginServiceloginService;

privateStringname;

privateStringproblem;

privateStringanswer;

privateinterrorNumberl=0;

privateinterrorNumber2=0;

publicfindPassWordDialog(java.awt.Dialogparent,ILoginService

loginService){

super(parent,true);

initComponents();

setLocationRelativeTo(parent);

this.loginService=loginService;

}

privatevoidfindButtonActionPerformed(java.awt.event.ActionEventevt){

if(errorNumber1>0||errorNumber2>0)

(

JOptionPane.showMessageDialog(this,"填写的信息还有错，不能

查找!");

return;

}

StringpassWord="";

try(

passWord=loginService.findPassWord(name,problem,answer);

}catch(Exceptione){

JOptionPane.showMessageDialog(this,e.getMessage());

}

newPasswordText.setText(passWord);

this.setVisible(true);

}

privatevoidnameTextFocusLost(java.awt.event.FocusEventevt){

errorNumber1=0;

try(

name=nameText.getText().trim();

if(name.length()<3||name.length()>15){

nameOk.setText("x")；

errorNumber1++;

}else{

nameOk.setText("V");

errorNumberl-;

}

}catch(Exceptione){

JOptionPane.showMessageDialog(this,"账户名不合法，此功能无法

运行!”)；

)

}

privatevoidanswerTextFocusLost(java.awt.event.FocusEventevt){

errorNumber2=0;

try(

problem=problemComboBox.getSelectedltem().toString();

answer=answerText.getText().trim();

if(answer.length()<=0){

problemOK.setText("x")；

errorNumber2++;

}else{

problemOK.setText("V");

errorNumber2-;

}

}catch(Exceptione){

JOptionPane.showMessageDialog(this,"问题选择有误，此功能无法

运行!”)；

}

}

)

packagelogin;

importaccount.Account;

publicinterfaceILoginService{

〃获得账户

AccountloginAccount(StringnewName,StringnewPassWord)throws

RuntimeException;

〃获得Self账户

AccountgetAccount()throwsRuntimeException;

〃注册账户

voidregisterAccount(StringnewName,StringnewPassWord,String

problem,Stringanswer)throwsRuntimeException;

〃判断是否登录成功

booleanisOkOfLogin();

StringfindPassWord(Stringname,Stringproblem,Stringanswer)throws

RuntimeException;

〃判断记住密码是否已选择

booleanisChooseOfPassWord();

//设置记住密码，自动登录

voidset(StringrembPassWord);

}

packagelogin;

importjava.awt.Color;

importjavax.swing.JOptionPane;

importaccount.Account;

publicclassloginDialogextendsjavax.swing.JDialog{

privateILoginServiceloginService;

privatebooleanisRembPassWord=false;

publicloginDialog(java.awt.Frameparent,ILoginServiceloginService)

super(parent,true);

initComponents();

setLocationRelativeTo(parent);

this.loginService=loginService;

initLogin();

}

privatevoidinitLogin(){

try(

isRembPassWord=loginService.isChooseOfPassWord();

if(isRembPassWord)

passwordCheckBox.setSelected(true);

Accountaccount=loginService.getAccount();

if(isRembPassWord==false)

return;

accountText.setText(account.getName());

passwordField.setText(account.getPassWord());

}catch(Exceptione){

JOptionPane.showMessageDialog(this,"登录失败!");

}

}

privatevoidfindPasswordMouseExited(java.awt.event.MouseEventevt){

findPassword.setForeground(Color.BLACK);

}

privatevoidfindPasswordMouseEntered(java.awt.event.MouseEventevt)

(

findPassword.setForeground(Color.RED);

}

privatevoidgainAccountMouseExited(java.awt.event.MouseEventevt){

gainAccount.setForeground(Color.BLACK);

}

privatevoidgainAccountMouseEntered(java.awt.event.MouseEventevt){

gainAccount.setForeground(Color.RED);

}

privatevoid

passwordCheckBoxMouseClicked(java.awt.event.MouseEventevt){

StringrembPassWord="关"；

if(passwordCheckBox.isSelected())

rembPassword="开";

try(

loginService.set(rembPassWord);

}catch(Exceptione){

JOptionPane.showMessageDialog(this,e.getMessage());

}

}

privatevoidfindPasswordMouseClicked(java.awt.event.MouseEventevt){

newfindPassWordDialog(this,loginService).setVisible(true);

}

privatevoidgainAccountMouseClicked(java.awt.event.MouseEventevt){

newRegisterAccountDialog(this,loginService).setVisible(true);

}

privatevoidloginButtonActionPerformed(java.awt.event.ActionEventevt){

try(

Stringname=accountText.getText();

if(name.equals("")){

JOptionPane.showMessageDialog(this,"账户不能空!");

return;

}

Stringpassword=String.valueOf(passwordField.getPassword());

if(password.equalsf"')){

JOptionPane.showMessageDialog(this,"密码不能空!")；

return;

}

loginService.loginAccount(name,password);

this.setVisible(false);

}catch(Exceptione){

JOptionPane.showMessageDialog(this,e.getMessage());

}

}

)

packagelogin;

importjava.io.*;

importjava.util.Scanner;

importaccount.Account;

publicclassLoginServiceimplementsILoginService{

privateStringnewName;

privateStringnewPassWord;

©Override

publicAccountloginAccount(StringnewName,StringnewPassWord)

throwsRuntimeException{

this.newName=newName;

this.newPassWord=newPassWord;

returnjudgeAccount(newName,newPassWord);

}

privateString0readlnfo(StringfileName,intnum){

String[]result=newString[num];

try(

Fileinputstreamin=newFilelnputStream(fileName);

Scannerscanner=newScanner(in);

for(inti=0;i<num;i++)

if(scanner.hasNextLine())

result[i]=scanner.nextLine();

in.close();

}catch(lOExceptione){

thrownewRuntimeException("从"+fileName+”磁盘读信息时出

错!)

}

returnresult;

}

privatevoidwritelnfo(StringfileName,Stringinfo)

(

try(

FileWriterout=newFileWriter(fileName);

out.write(info);

out.close();

}catch(lOExceptione1){

thrownewRuntimeException("信息写入"+fileName+"磁盘时出

错!)

}

}

privateAccountjudgeAccount(StringnewName,StringnewPassWord){

String[]info;

if(newName==null||newPassWord==null)

thrownewRuntimeException("输入的账户和密码都不能为null");

try(

info=readlnfo("account",2);

}catch(Exceptione){

thrownewRuntimeException(e.getMessage());

}

if(!info[0].equals(newName))

thrownewRuntimeException("输入的账户名有误!")；

if(!info[1].equals(newPassWord))

thrownewRuntimeException("输入的密码有误!")；

returnnewAccount(info[0],info[1]);

}

©Override

publicvoidregisterAccount(StringnewName,StringnewPassWord,

Stringproblem,Stringanswer)throwsRuntimeException{

if(newName==null||problem==null||answer==null

||newPassWord==null)

thrownewRuntimeException("输入的账户，密码，问题和答案都不能

为null");

try(

writeInfo("account",newName+"\n"+newPassWord+"\n"+

problem+"\n"

+answer);

}catch(Exceptione){

thrownewRuntimeException(e.getMessage());

}

}

©Override

publicbooleanisOkOfl_ogin(){

try(

judgeAccount(newName,newPassWord);

}catch(Exceptione){

returnfalse;

}

returntrue;

}

©Override

publicStringfindPassWord(StringnewName,Stringproblem,String

answer)

throwsRuntimeException{

String[]info;

if(newName==null||problem==null||answer==null)

thrownewRuntimeException("输入的账户，问题和答案都不能为

null");

try(

info=readlnfo("account",4);

}catch(Exceptione){

thrownewRuntimeException(e.getMessage());

}

if(!info[0].equals(newName))

thrownewRuntimeException("输入的账户名有误!")；

if(!info[2].equals(problem))

thrownewRuntimeException("选择的问题有误!")；

if(!info[3].equals(answer))

thrownewRuntimeException("问题的答案有误!")；

returninfo[1];

}

©Override

publicbooleanisChooseOfPassWord(){

String[]info;

try(

info=readlnfo("set",1);

}catch(Exceptione){

thrownewRuntimeException(e.getMessage());

}

if(info[0].equals("JF"))

returntrue;

returnfalse;

}

©Override

publicvoidset(StringrembPassWord){

if(rembPassWord==null)

thrownewRuntimeException("输入的记住密码设置和自动登录设

置都不能为null");

try(

writelnfo("set",rembPassWord+"\n");

}catch(Exceptione){

thrownewRuntimeException(e.getMessage());

}

}

©Override

publicAccountgetAccount()throwsRuntimeException{

String[]info;

try(

info=readlnfo("account",2);

}catch(Exceptione){

thrownewRuntimeException(e.getMessage());

}

returnnewAccount(info[0],info[1]);

}

)

/*

*RegisterAccountDialog.java

*

*Createdon_DATE_,_TIME_

*/

packagelogin;

importjava.awt.Font;

importjavax.swing.JOptionPane;

publicclassRegisterAccountDialogextendsjavax.swing.JDialog{

privateStringname;

privateStringpassword;

privateStringanswer;

privateStringproblem;

privateILoginServiceloginService;

privateinterrorNumber1=0;

privateinterrorNumber3=0;

privateinterrorNumber2=0;

privateinterrorNumber4=0;

]

publicRegisterAccountDialog(java.awt.Dialogparent,

ILoginServiceloginService){

super(parent,true);

initComponents();

setLocationRelativeTo(parent);

this.loginService=loginService;

}

privatevoidregisterButtonActionPerformed(java.awt.event.ActionEvent

evt){

try(

if(name==null||password==null||answer==null){

JOptionPane.showMessageDialog(this,"还有未填写的空，不能

注册!");

return;

}

if(errorNumber1>0||errorNumber2>0||errorNumber3>0||errorNumber4>0)

(

JOptionPane.showMessageDialog(this,"填写的信息还有错，不

能注册!)

return;

}

loginService.registerAccount(name,password,problem,answer);

this.setVisible(false);

}catch(Exceptione){

JOptionPane.showMessageDialog(this,"对不起!注册失败，请稍后

注册。")；

}

}

privatevoidformWindowClosing(java.awt.event.WindowEventevt){

intresult=JOptionPane.showConfirmDialog(this,"是否放弃此次注

册?"，"关闭信息框"，

JOptionPane.YES_NO_OPTION);

if(result==JOptionPane.NO_OPTION)

(

this.setVisible(false);

}

this.setVisible(true);

}

privatevoidnameTextFocusLost(java.awt.event.FocusEventevt){

errorNumber1=0;

try(

name=nameText.getText().trim();

if(name.length()<3||name.length()>15)

(

nameOk.setText("x")；

errorNumber1++;

}else{

nameOk.setText("V");

errorNumberl-;

}

}catch(Exceptione){

JOptionPane.showMessageDialog(this,"账户名不合法，此功能无法

运行!");

}

}

privatevoidanswerTextFocusLost(java.awt.event.FocusEventevt){

errorNumber2=0;

try(

problem=problemComboBox.getSelectedltem().toString();

answer=answerText.getText().trim();

if(answer.Iength()<=0)

(

answerOK.setText("x")；

errorNumber2++;

}else{

answerOK.setText("J");

errorNumber2-;

}

}catch(Exceptione){

}

}

privatevoidisPasswordFieldFocusLost(java.awt.event.FocusEventevt){

errorNumber3=0;

try(

StringispassWord=

String.valueOf(isPasswordField.getPassword())

.trim();

System.out.println("ispassWord="+ispassWord);

System.out.println(passWord);

if(password.equals(ispassWord))

(

isPassWordOk.setText("V");

errorNumber3-;

}else{

isPassWordOk.setText("x")；

errorNumber3++;

}

}catch(Exceptione){

JOptionPane.showMessageDialog(this,"问题的答案不合法,此功能

无法运行!)

}

}

privatevoidpasswordFieldFocusLost(java.awt.event.FocusEventevt){

errorNumber4=0;

try(