Java programming: There are five students, each student has 3 courses (Chinese, maths, English) scores,

1 import Java.io.FileReader;2 import Java.io.FileWriter;3 import java.io.IOException;4 import java.util.Collections;5 import Java.util.Comparator;6 import java.util.LinkedList;7 import Java.util.Scanner;8  9  Public classStudentTen { One     DoubleChinese; A     DoubleMath; -     Double中文版; -     Doublesum; the String sname; -   -      PublicStudent (DoubleChinese,DoubleMathDouble中文版,Doublesum, String sname) -     { +          This. Chinese =Chinese; -          This. Math =Math; +          This. 中文版 =中文版; A          This. sum =sum; at          This. sname =sname; -     } -   - @Override -      PublicString toString () -     { in         returnString.Format ("%s\t\t%2$.1f\t\t\t%3$.1f\t\t\t%4$.1f\t\t\t%5$.1f", Sname, Chinese, math, 中文版, sum); -     } to   +      Public Static voidMain (string[] args) -     { theScanner Scanner =NewScanner (System.inch); *linkedlist<student> list =NewLinkedlist<student> (); $System. out. println ("Enter the student's information from the keyboard, enter the format as: name,30,30,30 (name, <a href="Https//www.baidu.com/s?wd=%E4%B8%89%E9%97%A8&tn=44039180_cpr&fenlei= Mv6quakxtzn0izrqihckpjm4nh00t1yvuhnkuwn-njmvnypbpwnv0zwv5hcvrjm3rh6spfkwumw85hfynjn4nh6sgvpst6k1tl0qnfk1tl0z5hd0igf _5y9yiz0lqzqlpa-bmyt8mh7guzr8mvqvql7dugpypyq8q1dlpwt3pwr3rjrlpjfdrhrvp0 "target=" _blank "class=" baidu-highlight " > Sanmen </a>) < direct return to end > ");Panax Notoginseng          while(Scanner.hasnextline ()) -         { theString line =scanner.nextline (). Trim (); +             if("". Equals (line)) A             { the                  Break; +             } -String[] Info = line.split ("\\,"); $String name = info[0]; $             DoubleChinese =0; -             DoubleMath =0; -             Double中文版 =0; the             Doublesum =0; -             TryWuyi             { theChinese = double.parsedouble (info[1]); -Math = double.parsedouble (info[2]); Wu中文版 = double.parsedouble (info[3]); -sum = Chinese + math +中文版; About             } $             Catch(Exception e) -             { -System. out. println ("format is incorrect, rewrite input:"); -                 Continue; A             } +Student Student =NewStudent (Chinese, math, 中文版, sum, name); the List.add (student); -         } $ scanner.close (); theCollections.sort (list,NewComparator<student> () the         { the @Override the              Public intCompare (Student O1, Student O2) -             { in                 if(O1.sum >o2.sum) the                 { the                     return-1; About                 } the                 Else if(O1.sum <o2.sum) the                 { the                     return 1; +                 } -                 Else the                 {Bayi                     return 0; the                 } the             } -         }); -         Try the         { theString file ="Stu.txt"; theString line = System.getproperty ("Line.separator"); theFileWriter FW =NewFileWriter (file,true); -FileReader FR =Newfilereader (file); the             if(Fr.read () = =-1) the             { theFw.write ("name \t\t Chinese \t\t mathematics \t\t<a href="Https//www.baidu.com/s?wd=%E8%8B%B1%E8%AF%AD&tn=44039180_cpr&fenlei= Mv6quakxtzn0izrqihckpjm4nh00t1yvuhnkuwn-njmvnypbpwnv0zwv5hcvrjm3rh6spfkwumw85hfynjn4nh6sgvpst6k1tl0qnfk1tl0z5hd0igf _5y9yiz0lqzqlpa-bmyt8mh7guzr8mvqvql7dugpypyq8q1dlpwt3pwr3rjrlpjfdrhrvp0 "target=" _blank "class=" baidu-highlight " > English </a>\t\t total score "+ line);94             } the fr.close (); the              for(Student student:list) the             {98Fw.write (student.tostring () +Line ); About Fw.flush (); -             }101 fw.close ();102System. out. println ("join complete.");103         }104         Catch(IOException e) the         {}106     }107}

Java programming: There are five students, each student has 3 courses (Chinese, maths, English) scores,