package javacodes;

import java.util.*;

class Students

{

String name="";

int roll=0;

double cgpa=0.0;

Students(String name,int roll,double cgpa)

{

this.name=name;

this.roll=roll;

this.cgpa=cgpa;

}

Students(){}

void setstu(String name,int roll,double cgpa)

{

this.name=name;

this.roll=roll;

this.cgpa=cgpa;

}

void getstu()

{

System.out.println(name+"\t"+roll+"\t"+cgpa);

}

}

class Sem

{

ArrayList<Students> li;

void setsem()

{

Scanner in=new Scanner(System.in);

System.out.print("Enter number of Students in this Sem :");

int n=in.nextInt();

li=new ArrayList<Students>(n);

String name;int roll;double cgpa;

Students obj;

for(int i=0;i<n;++i)

{

obj=new Students();

System.out.println("Student "+(i+1)+" :");

System.out.print("Enter name :");

name=in.next();

System.out.print("Enter roll :");

roll=in.nextInt();

System.out.print("Enter cgpa :");

cgpa=in.nextDouble();

obj.setstu(name, roll, cgpa);

li.add(obj);

}

}

void showsem()

{

System.out.println("Name\tRoll\tCGPA");

for(Students i:li)

{

i.getstu();

}

}

}

class Course

{

String name;

ArrayList<Sem> li;

void setcourse()

{

Scanner in=new Scanner(System.in);

System.out.println("Enter name of this Course :");

name=in.next();

System.out.print("Enter number of Sem in this Course :");

int n=in.nextInt();

li=new ArrayList<Sem>(n);

Sem obj;

for(int i=0;i<n;i++)

{

obj=new Sem();

System.out.println("\tSemester "+(i+1)+" :");

obj.setsem();

li.add(obj);

}

}

void showcourse()

{

int c=1;

System.out.println(name);

for(Sem i:li)

{

System.out.println("\tSemester "+c);

i.showsem();

c++;

}

}

}

class Department

{

String name;

ArrayList<Course> li;

void setdept()

{

Scanner in=new Scanner(System.in);

System.out.println("Enter name of this Department :");

name=in.nextLine();

System.out.print("Enter number of Courses in this Department :");

int n=in.nextInt();

li=new ArrayList<Course>(n);

Course obj;

for(int i=0;i<n;i++)

{

obj=new Course();

System.out.println("\tCourse "+(i+1)+" :");

obj.setcourse();

li.add(obj);

}

}

void showdept()

{

int c=1;

System.out.println(name);

for(Course i:li)

{

System.out.print("\tCourse "+c+" :");

i.showcourse();

c++;

}

}

}

class Institute

{

String name;

ArrayList<Department> li;

void setinst()

{

Scanner in=new Scanner(System.in);

System.out.println("Enter name of this Institute :");

name=in.next();

System.out.print("Enter number of Departments in this Institute :");

int n=in.nextInt();

li=new ArrayList<Department>(n);

Department obj;

for(int i=0;i<n;i++)

{

obj=new Department();

System.out.println("\tDepartment "+(i+1)+" :");

obj.setdept();

li.add(obj);

}

}

void showinst()

{

int c=1;

System.out.println(name);

for(Department i:li)

{

System.out.print("\tDepartment "+c+" :");

i.showdept();

c++;

}

}

}

public class University {

public static void main(String[] args)

{

Scanner in=new Scanner(System.in);

System.out.println("Welcome!");

Institute obj=new Institute();

obj.setinst();

obj.showinst();

}

}