What it declared marks=I; rollno=n; and all, cant I use directly like void setrecord(int arks, int roll no), in void setrecord method

See more:

Java

public class Student4 {
int marks;
int rollno;
int rank;
String name;

void setRecord(int i,int n,int r,String ne){
marks=i;
rollno=n;
rank=r;
name=ne;

}



void display()
{
System.out.println(rollno);
System.out.println(name);
System.out.println(marks);
System.out.println(rank);
System.out.println("");

}
}
class Result{
public static void main(String[] args) {
Student4 d1=new Student4();
Student4 d2=new Student4();
Student4 d3=new Student4();
d1.setRecord(101,45,551,"Edward");
d2.setRecord(101,985,1,"Hard");
d3.setRecord(101,985,1,"Erd");
d1.display();
d2.display();
d3.display();
}

}

What I have tried:

my best but unable to understand