Core Java - Episode 10 b/b (user defined Package - explanation)

classes :-

1)
package stmiras;
import java.util.*;

public class StudentM
{
int rno;
String sname;

public void acceptStudent()
{
Scanner sc=new Scanner(System.in);
System.out.println("Please enter rno");
rno=sc.nextInt();
System.out.println("Please enter stud name");
sname=sc.next();
}

public void displayStudent()
{
System.out.println(rno + sname);
}
}

2)
package stmiras;
import java.util.*;
public class TeacherM
{
int tno;
String tname;

public void acceptTeacher()
{
Scanner sc=new Scanner(System.in);
System.out.println("Please enter tno");
tno=sc.nextInt();
System.out.println("Please enter teacher name");
tname=sc.next();
}

public void displayTeacher()
{
System.out.println(tno + tname);
}
}

3)
package stmiras;
import java.util.*;
public class PrincipalM
{
int pno;
String pname;

public void acceptPrincipal()
{
Scanner sc=new Scanner(System.in);
System.out.println("Please enter pno");
pno=sc.nextInt();
System.out.println("Please enter Principal name");
pname=sc.next();
}

public void displayPrincipal()
{
System.out.println(pno + pname);
}
}

main class
import stmiras.*;

public class ColMainNew
{
public static void main(String args[])
{
StudentM s1=new StudentM();
s1.acceptStudent();
s1.displayStudent();

TeacherM t1=new TeacherM();
t1.acceptTeacher();
t1.displayTeacher();

PrincipalM p1=new PrincipalM();
p1.acceptPrincipal();
p1.displayPrincipal();


}
}