sir please tell how to fix this type of error (regarding buffered reader)

Question

import java.io.*;
 class prg {
     public void main () throws IOException
     {
      BufferedReader br =new BufferedReader (new InputStreamReader(System.in));
        string name ;
        int sn;
        double amt ,disc,net;
        for (sn=1;sn<=15;sn++)
        { System.out.println("enter name ");
            name= br.readLine();
            System.out.println("enter ticket amount ");
            amt=Double.parseDouble(br.readLine());
           if  (amt>70000)
           disc=0.18*amt;
           
           else if (amt >55000)
           disc=0.16*amt;
           else if(amt>35000)
           disc=0.12*amt;
           else if (amt>25000)
           disc=0.10*amt;
           else
           disc =0.02*amt;
           net=amt-disc;
           System.out.println(sn+"\t"+name+"\t"+amt+"\t"+disc + "\t"+net);
        }
    }
}

Answer 1

1. Missing headers  for (BufferedReader and InputStreamReader )

2. Missing Exception Handler for BufferedReader

3. lowercase "string" used in place of "String" class

import java.io.BufferedReader;

import java.io.InputStreamReader;

public class Main

{

  public static void main (String[]args)

  {

    try

    {

      BufferedReader br =

new BufferedReader (new InputStreamReader (System.in));

      String name;

      int sn;

      double amt, disc, net;

      for (sn = 1; sn <= 15; sn++)

{

  System.out.println ("enter name ");

  name = br.readLine ();

  System.out.println ("enter ticket amount ");

  amt = Double.parseDouble (br.readLine ());

  if (amt > 70000)

    disc = 0.18 * amt;

  else if (amt > 55000)

    disc = 0.16 * amt;

  else if (amt > 35000)

    disc = 0.12 * amt;

  else if (amt > 25000)

    disc = 0.10 * amt;

  else

    disc = 0.02 * amt;

  net = amt - disc;

  System.out.println (sn + "\t" + name + "\t" + amt + "\t" + disc +

      "\t" + net);

}

    }

    catch (Exception ex)

    {

      ex.printStackTrace ();

    }

  }

}

Comments

import java.io.*;
public  class prg {
     public static void main (String args[]) throws IOException
     {
      BufferedReader br =new BufferedReader (new InputStreamReader(System.in));
      String name ;
        int sn;
        double amt ,disc,net;
        for (sn=1;sn<=15;sn++)
        { System.out.println("enter name ");
            name= br.readLine();
            System.out.println("enter ticket amount ");
            amt=Double.parseDouble(br.readLine());
           if  (amt>70000)
           disc=0.18*amt;
           
           else if (amt >55000)
           disc=0.16*amt;
           else if(amt>35000)
           disc=0.12*amt;
           else if (amt>25000)
           disc=0.10*amt;
           else
           disc =0.02*amt;
           net=amt-disc;
           System.out.println(sn+"\t"+name+"\t"+amt+"\t"+disc + "\t"+net);
        }
    }
}