SortGrade.java

import java.util.List;
import java.util.ArrayList;
import java.util.ListIterator;
import java.util.Collections;
import java.util.TreeSet;

class SortGrade {
  List<Student> stuList;
  SortGrade(List<Student> stuList) {
    this.stuList = stuList;
  }

  public int compareDouble(double val1, double val2) {
    if (val1 > val2) return 1;
    if (val1 < val2) return -1;
    return 0;
  }

  public int compareStrings(String str1, String str2) {
    if (str1.compareTo(str2) > 0) return 1;
    if (str1.compareTo(str2) < 0) return -1;
    return 0;
  }

  public List<Student> sortingGrade() {
    for (int i = 0; i < stuList.size(); i++) {
      for (int j = 0; j < stuList.size(); j++) {
        if (this.compareDouble(stuList.get(i).getAvgGrade(),
          stuList.get(j).getAvgGrade()) == 1) {
          Collections.swap(stuList, i, j);
        } else if (this.compareDouble(stuList.get(i).getAvgGrade(),
          stuList.get(j).getAvgGrade()) == 0) {
            if (this .compareDouble(stuList.get(i).getGradeInMaths(),
              stuList.get(j).getGradeInMaths()) == 1 ) {
              Collections.swap(stuList,i,j);
            } else if (this .compareDouble(stuList.get(i).getGradeInMaths(),
              stuList.get(j).getGradeInMaths()) == 0) {
                if (this .compareDouble(stuList.get(i).getGradeInScience(),
                   stuList.get(j).getGradeInScience()) == 1) {
                  Collections.swap(stuList,i,j);
                } else if (this .compareDouble(stuList.get(i).getGradeInScience(),
                    stuList.get(j).getGradeInScience()) == 0) {
                    if (this .compareDouble(stuList.get(i).getGradeInSocial(),
                      stuList.get(j).getGradeInSocial()) == 1) {
                      Collections.swap(stuList,i,j);
                    } else if (this .compareDouble(stuList.get(i).getGradeInSocial(),
                        stuList.get(j).getGradeInSocial()) == 0) {
                        if (this .compareDouble(stuList.get(i).getGradeInFirstLang(),
                          stuList.get(j).getGradeInFirstLang()) == 1) {
                          Collections.swap(stuList,i,j);
                        } else if(this .compareDouble(stuList.get(i).getGradeInFirstLang(),
                            stuList.get(j).getGradeInFirstLang()) == 0){
                            if (this .compareStrings(stuList.get(i).getDateOfBirth(),
                            stuList.get(j).getDateOfBirth()) == -1) {
                              Collections.swap(stuList,i,j);
                            } else if (this .compareStrings(stuList.get(i).getDateOfBirth(),
                              stuList.get(j).getDateOfBirth()) == 0) {
                                if (this .compareStrings(stuList.get(i).getHallTicketNo(),
                                  stuList.get(j).getHallTicketNo()) == -1) {
                                  Collections.swap(stuList,i,j);
                                }
                              }
                          }
                      }
                  }
              }
          } 
      }
    }
    return stuList;
  }
   
}

SortGradeDemo.java

import java.util.List;
import java.util.ArrayList;

class SortGradeDemo {
  public static void main(String[] args) {
    List<Student> stuList = new ArrayList<Student>();
    Student s1 = new Student(8.5, 7.6, 7.3, 8.0, 7.9, "21/08/1994", "IH110");
    Student s2 = new Student(7.6, 8.6, 6.3, 7.5, 7.2, "2/01/1993", "IH113");
    Student s3 = new Student(7.4, 7.5, 7.6, 8.0, 8.5, "12/06/1994", "IH080");
    Student s4 = new Student(8.2, 9.2, 7.2, 7.0, 8.2, "14/11/1992", "IH085");
    Student s5 = new Student(8.5, 7.6, 7.3, 8.0, 7.9, "21/08/1994", "IH007");
    stuList.add(s1);
    stuList.add(s2);
    stuList.add(s3);
    stuList.add(s4);
    stuList.add(s5);
    SortGrade sg = new SortGrade(stuList);
    stuList = sg.sortingGrade();
    for (Student stu : stuList) {
    	System.out.println(stu);
    }
  }  
}

Student.java

class Student {
  double gradeInMaths;
  double gradeInScience;
  double gradeInEnglish;
  double gradeInSocial;
  double gradeInFirstLang;
  String dateOfBirth;
  String hallTicketNo;
  double avgGrade;

  Student(double gradeInMaths, double gradeInScience, double gradeInEnglish,
    double gradeInSocial, double gradeInFirstLang,String dateOfBirth,
    String hallTicketNo) {
    this.gradeInMaths = gradeInMaths;
    this.gradeInScience = gradeInScience;
    this.gradeInEnglish = gradeInEnglish;
    this.gradeInSocial = gradeInSocial;
    this.gradeInFirstLang = gradeInFirstLang;
    this.dateOfBirth = dateOfBirth;
    this.hallTicketNo = hallTicketNo;
    this.avgGrade = (gradeInMaths + gradeInScience + gradeInEnglish +
            gradeInSocial + gradeInFirstLang)/5;
  }
  public double getAvgGrade() {
    return this.avgGrade;
  }

  public double getGradeInMaths() {
    return this.gradeInMaths;
  }

  public double getGradeInScience() {
    return this.gradeInScience;
  }

  public double getGradeInSocial() {
    return this.gradeInSocial;
  }

  public double getGradeInEnglish() {
    return  this.gradeInEnglish;
  }

  public double getGradeInFirstLang() {
    return this.gradeInFirstLang;
  }

  public String getDateOfBirth() {
    return this.dateOfBirth;
  }

  public String getHallTicketNo() {
    return  this.hallTicketNo;
  }

  public String toString() {
    String s = "Maths: " + gradeInMaths + "\t";
    s = s + "Science: " + gradeInScience + "\t";
    s = s + "English: " + gradeInEnglish + "\t";
    s = s + "Social: " + gradeInSocial + "\t";
    s = s + "FirstLang: " + gradeInFirstLang + "\t";
    s = s + "AvgGrade: " + avgGrade + "\t";
    s = s + "DateOfBirth: " + dateOfBirth + "\t";
    s = s + "HallTicketNo: " + hallTicketNo + ".";
    return s;
  }
}