Notes

interface Student {
public void course();
public void club();
}
interface Department {
public void block();
}
class cs_stud implements Student, Department {
public void course(){
System.out.println("course is CS");
}
public void club(){
System.out.println("programming club");
}
public void block(){
System.out.println("I - Block");
}
}

class sports_stud implements Student, Department {
public void course(){
System.out.println("course is Phys. ED");
}
public void club(){
System.out.println("Sports club");
}
public void block(){
System.out.println("F - Block");
}
}

class Main {
public static void main(String[] args) {
cs_stud cs = new cs_stud();
sports_stud sp = new sports_stud();
System.out.println("---- CS Student ----");
cs.course();
cs.club();
cs.block();
System.out.println("---- Sports Student ----");
sp.course();
sp.club();
sp.block();
}
}