Collections.sort(list, new Comparator
    
     () {
      @Override     public int compare(Student o1, Student o2) {
          int result = 0;         if (o1.getExta().equals("200")) {
              result = -1;         }         if (o2.getExta().equals("200")) {
              result = 1;         }         if (result != 0)             return result;         if (o1.getIsPriority() == 1) {
              result = -1;         }         if (o2.getIsPriority() == 1) {
              result = 1;         }         if (result != 0)             return result;         result = o1.getSort() - o2.getSort();         if (result != 0)             return result;         result = o2.getRating() - o1.getRating();         if (result != 0)             return result;         result = o2.getTiming() - o1.getTiming();         return result;     } });