the exact code :

import java.util.*; class Priorities {

List<Student> getStudents(List<String> events) {

    PriorityQueue<Student> priorityQueue = new PriorityQueue<>(10,new Comparator<Student>() {
        public int compare(Student s1, Student s2) {
            return s1.getCGPA() != s2.getCGPA() ? s2.getCGPA() - s1.getCGPA() > 0 ? 1 : -1 : !s1.getName().equals(s2.getName()) ? s1.getName().compareTo(s2.getName()) :  s1.getID() > s2.getID() ? 1 : -1;
        }
    });

    for (String str: events) {
         String isENTER = str.split(" ")[0];

        if (isENTER.equals("ENTER")) {
            int id = Integer.parseInt(str.split(" ")[3]);
            String name = str.split(" ")[1];
            double cgpa = Double.parseDouble(str.split(" ")[2]);

            priorityQueue.add(new Student(id, name, cgpa));

        } else priorityQueue.poll();
    }

    List<Student> result = new ArrayList<>();

    while (!priorityQueue.isEmpty()) {
        result.add(priorityQueue.poll());
    }

    return result;
}

}

class Student { private int id; private String name; private double cgpa;

Student(int id, String name, double cgpa) {
    this.id = id;
    this.name = name;
    this.cgpa = cgpa;
}

int getID() {
    return id;
}

String getName() {
    return name;
}

double getCGPA() {
    return cgpa;
}

}