Java code for maintaining a student records database using File Handling

Java program for maintaining a student records database using File Handling.

import java.io.*;
class StudentRecords
{
static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

 public void addRecords() throws IOException
 {
 // Create or Modify a file for Database
 PrintWriter pw = new PrintWriter(new BufferedWriter(new
 FileWriter("studentRecords.txt",true)));
 String name, Class, fname, mname, address, dob;
 int age;
 long telephoneNo;
 String s;
 boolean addMore = false;
 // Read Data
 do
 {
  System.out.print("\nEnter name: ");
  name = br.readLine();

  System.out.print("Father's Name: ");
  fname = br.readLine();

  System.out.print("Mother's Name: ");
  mname = br.readLine();

  System.out.print("Address: ");
  address = br.readLine();

  System.out.print("Class: ");
  Class = br.readLine();

  System.out.print("Date of Birth (dd/mm/yy) : ");
  dob = br.readLine();

  System.out.print("Age: ");
  age = Integer.parseInt(br.readLine());

  System.out.print("Telephone No.: ");
  telephoneNo = Long.parseLong(br.readLine());
  // Print to File
  pw.println(name);
  pw.println(fname);
  pw.println(mname);
  pw.println(address);
  pw.println(Class);
  pw.println(dob);
  pw.println(age);
  pw.println(telephoneNo);
  
  System.out.print("\nRecords added successfully !\n\nDo you want to add more records ? (y/n) : ");
  s = br.readLine();
  if(s.equalsIgnoreCase("y"))
  {
   addMore = true;
   System.out.println();
  }
  else
   addMore = false;
 }
 while(addMore);
 pw.close();
 showMenu();
 }
 public void readRecords() throws IOException
 {
 try
 {
  // Open the file
  BufferedReader file = new BufferedReader(new
  FileReader("studentRecords.txt"));
  String name;
  int i=1;
  // Read records from the file
  while((name = file.readLine()) != null)
  {
   System.out.println("S.No. : " +(i++));
   System.out.println("-------------");
   System.out.println("\nName: " +name);
   System.out.println("Father's Name : "+file.readLine());
   System.out.println("Mother's Name : "+file.readLine());
   System.out.println("Address: "+file.readLine());
   System.out.println("Class: "+file.readLine());
   System.out.println("Date of Birth : "+file.readLine());
   System.out.println("Age: "+Integer.parseInt(file.readLine()));
   System.out.println("Tel. No.: "+Long.parseLong(file.readLine()));
   System.out.println();
  }
  file.close();
  showMenu();
 }
 catch(FileNotFoundException e)
 {
  System.out.println("\nERROR : File not Found !!!");
 }
 }
 public void clear() throws IOException
 {
 // Create a blank file
 PrintWriter pw = new PrintWriter(new BufferedWriter(new
 FileWriter("studentRecords.txt")));
 pw.close();
 System.out.println("\nAll Records cleared successfully !");
 for(int i=0;i<999999999;i++); // Wait for some time
 showMenu();
 }
 public void showMenu() throws IOException
 {
 System.out.print("1 : Add Records\n2 : Display Records\n3 : Clear All Records\n4 : Exit\n\nYour Choice : ");
 int choice = Integer.parseInt(br.readLine());
 switch(choice)
 {
  case 1:
   addRecords();
   break;
  case 2:
   readRecords();
   break;
  case 3:
   clear();
   break;
  case 4:
   System.exit(1);
   break;
  default:
   System.out.println("\nInvalid Choice !");
   break;
 }
 }
 public static void main(String args[]) throws IOException
 {
 StudentRecords call = new StudentRecords();
 call.showMenu();
 }
}

Algorithm for Adding Records:-

1. Start

2. Open the database file.

3. Read data from the user.

4. Print the data to file.

5. Close the file.

6. End

Algorithm for Displaying Records:-

1. Start

2. Open the database file.

3. Read data from the filr.

4. Print the data on screen.

5. Close the file.

6. End

Algorithm for Clearing All Records:-

1. Start

2. Overwrite the database file with a blank file.

5. Close the file.

6. End

OUTPUT:-

1 : Add Records

2 : Display Records

3 : Clear All Records

4:  Exit

Your Choice : 1

Enter name : Mayank K. Rastogi

Father's Name : Surendra Kumar Rastogi

Mother's Name : Sushma Rastogi

Address : Vipul Khand, Gomti Nagar, Lucknow.

Class : 12 - C

Date of Birth (dd/mm/yy) : 01/10/91

Age : 18

Telephone No. : 9546354565

Records added successfully !

Do you want to add more records ? (y/n) : y

.........

.......

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