The given code accepts the details from the user like year of joining, Department code, salary, employee name etc.This data is then stored into the text file using ByteArrayOutputStream class.

import java.io.*;

class  RandomAccessFileExample{
    public static void main(String[] args){
        try{
            File f=new File("c:/employee.txt");
            ByteArrayOutputStream arr=new ByteArrayOutputStream();


            BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
            System.out.print("Enter year of joining: ");
            int year=Integer.parseInt(br.readLine());

            System.out.print("Enter department code: ");
            String dcode=br.readLine();

            System.out.print("Employee Name: ");
            String name=br.readLine();

            System.out.print("Salary: ");
            long sal=Long.parseLong(br.readLine());

            String str=Integer.toString(year)+" "+dcode+" "+name+" "+Long.toString(sal);
            byte buf[] = str.getBytes();
            arr.write(buf); 
            OutputStream f2 = new FileOutputStream(f);
            arr.writeTo(f2);
            arr.close(); 
            f2.close(); 

        }
        catch(Exception e){}
    }
}