import java.io.*;

class student
{
   String studentID;
   String Name;
   String Address;
   String Telephone;

   public void setData() throws IOException
   {//to set data of each student
     BufferedReader stuData = new BufferedReader
     (new InputStreamReader (System.in));
     System.out.print("\n\t\tEnter StudentID: ");
     studentID = stuData.readLine();
     System.out.print("\n\t\tEnter Name of the Student: ");
     Name = stuData.readLine();
     System.out.print("\n\t\tEnter Address: ");
     Address = stuData.readLine();
     System.out.print("\n\t\tEnter Telephone number: ");
     Telephone = stuData.readLine();
   }
   public void Display ()
   {
     //display detail of each student
     System.out.println();
     System.out.print (studentID + "\t\t"+Name + "\t" +Address+ "\t\t" +Telephone);

   }
}//end of student class

class StudentProgram
{
   //student_count gives Number of student records in Array.
   static int student_count = 0;
   /*studnetRec is an Array of student objects which can store
   up to the mazimum of 20 student objects*/
   static student studentRec[] = new student[20];

   public static void clear_screen()
     //to clear screen
   {for (int i=0; i<5; i++)
     System.out.println();
   }
   public static void Add_Rec() throws IOException
   {
     clear_screen();
     studentRec[student_count] = new student();
     //calling setdata to set data
     studentRec[student_count].setData();
     //To count student record just added
     student_count++;
     //to display main menu
     Menu();
   }
   public static void View_All() throws IOException
   {
     clear_screen();
     /*creation of student object uf the
     user choose choice 1 to add
     new Student Record*/
     BufferedReader ch = new BufferedReader
     (new InputStreamReader(System.in));
     System.out.print("StudID \t\tName \t\tAddress \t\t\tTel");
     //to display all student records in Array
     for (int i=0; i <student_count; i++)
        studentRec [i].Display();
     System.out.println("\nPress Any key to display menu ");
     String anykey = ch.readLine();

   }
   public static void Menu() throws IOException
   {
     int choice;
     BufferedReader br = new BufferedReader(
     new InputStreamReader(System.in));
     do{
         clear_screen();
        for (int i=0; i<4; i++)//i<4 (no. of lines from the top)
        System.out.println();
        System.out.println("\t\t\t###################################");
        System.out.println("\n\t \t\t(1) Add New Student Record");
        System.out.println("\n\t \t\t(2) Display All Student Records");
        System.out.println("\n\t \t\t(3) Enquire Student Record");
        System.out.println("\n\t \t\t(4) Exit Program");
        System.out.println("\t\t\t###################################");
        System.out.print("Enter Your Choice");
        choice = Integer.parseInt(br.readLine());
        //to read any data from the keyboard(readline)
        switch(choice)
        {
          case 1:
             Add_Rec();
             break;
          case 2:
             View_All();
             break;
          case 3:
             System.out.println("You choose enquire student record");
          break;
        }
     }while(choice!=4);
      System.out.println("\n\t\t\tThank you for using Program");//n\t\t(alignment)
   }
   public static void main (String args[]) throws IOException
   {
     Menu();
   }
}//end of class

// Search the student list using Name as the key
public student sequential_search ( student[] list, int size, String key ) {
 for ( int i = 0; i < size; i++ ) {
  if ( list[i].Name.equals ( key ) )
   return list[i];
 }

 return null;
}

// Search the student list using Name as the key
public student sequential_search ( student[] list, int size, String key ) {
 while ( --size >= 0 ) {
  if ( list[size].Name.equals ( key ) )
   return list[size];
 }

 return null;
}