day15作业1.Date类中哪个方法可以返回当前日期对象的毫秒值

day15作 1：Date（理解Date--longDated=newDate();LongDated=newDate();Longtime=d.getTime();long--DateDated=newDate():Date--StringClassClassPub staticvoidmain(String[]{Dated=newSimpleDateFormatsdfnewSimpleDateFormat(“yyyyMMddHH:mm:ssE”);Stringstr=Sdf.format(d);}}String--ClassClassPublcistaticvoidmain(Stirng[]{SimpleDateFormatsdfnewSimpleDateFormat(“yyyyMM月dd日”);Dated=Sdf.parse(str);}}综合案例(掌握)今天的作业就是要搞定这个综合案例用户类用户类privateStringpassword;privateString privateStringphone;publicUser(){}publicUser(Stringusername,Stringpassword,,Stringphone)this.username=this.password= this.phone=}publicStringgetUsername()return}publicvoidsetUsername(Stringusername)this.username=}publicStringgetPassword()return}publicvoidsetPassword(Stringpassword)this.password=}publicString () }publicvoid ) }publicStringgetPhone()return}publicvoidsetPhone(Stringphone)this.phone=}}package import publicinterfaceUserDao booleanisLogin(Stringusername,String voidregist(User booleanusernamec(String void}packagecn. importjava.util.*;importcn. importcn. publicclassUserDaoImplimplementsUserDao{privatestaticUser[]user1=newUser[5];privatestaticintindex=0;publicbooleanisLogin(Stringusername,Stringpassword)//TODOAuto-generatedmethodstubbooleanflag=false;for(inti=0;i<user1.length;i++){if(user1[i]!=null){(user1[i].getUsername().equals(username)&&user1[i].getPassword().equals(password)){flag=true;return}}}return}publicvoidregist(Useruser)//TODOAuto-generatedmethodstubuser1[index++]=user;}publicbooleanusernamec(String{char[]c=str.toCharArray();for(inti=0;i<c.length;i++){if((c[i]>='!'&&c[i]<='/')|c[i]>=':'&&c[i]<='@'){returnfalse;}}return}public {inti=(int)(Math.random()*100+1);Scannersc=newScanner(System.in);while(true){inta=if(a>i)}elseif(a<i)}}}}packagecn. importjava.util.*;importcn. importcn. importcn. publicclassStudentTest{*@parampublicstaticvoidmain(String[]args)//TODOAuto-generatedmethodstubintindex1=0;while(true) Scannersc=newScanner(System.in);Stringstr=sc.nextLine();switch(str){case"1":while(true) Stringstr1=sc.nextLine(); Stringstr2=sc.nextLine();Stringstr3=sc.nextLine(); Stringstr4=sc.nextLine();UserDaoImplud=newUserDaoImpl();booleanbl=ud.usernamec(str1);if(!bl) }elseif(str1.length()<7){ }Useruser1=newUser(); UserDaoImpludi=newUserDaoImpl(); }case"2":while(true)Stringusername=sc.nextLine(); Stringpassword=sc.nextLine(