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

public class University {

    public static void main(String args[]){
        List<Student> studentList = new ArrayList<>();
        studentList.add(new Student("David",0,150));
        studentList.add(new Student("Alex",1,90));
        studentList.add(new Student("Melvin",2,100));
        studentList.add(new Student("Steven",3,96));
        studentList.add(new Student("Marc",4,100));
        studentList.add(new Student("John",5,100));
        studentList.removeIf(st -> st.getProgrMarks() != 100);
        System.out.println("Number of students with exact a mark of 100: " + studentList.size() );
        for(Student st: studentList)  System.out.println(st);
    }
}

class Student {

    private String name;
    private int studentId;
    private int progrMarks;

    Student(String name, int studentId, int progrMarks) {
        this.name = name;
        this.studentId = studentId;
        this.progrMarks = progrMarks;
    }

    public int getProgrMarks() {
        return progrMarks;
    }

    @Override
    public String toString() {
        return "Student{" +
                "studentId=" + studentId +
                ", name='" + name + '\'' +
                ", progrMarks=" + progrMarks +
                '}';
    }
}