Refine the student manager program to manipulate the student information from files by using the BufferedReader and BufferedWriter

 
         

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;

public class Student {

    public static void main(String[] argv) throws Exception {
        BufferedReader bufRead = new BufferedReader(new FileReader("stdinfo.txt"));
        BufferedWriter bufWrite = new BufferedWriter(new FileWriter("newstdinfo.txt"));
        int i;
        // manipulate the student information from files
        do {
            i = bufRead.read();
            if (i != -1) {
                if (Character.isUpperCase((char) i)) {
                    bufWrite.write(Character.toLowerCase((char) i));
                } else {
                    bufWrite.write((char) i);
                }
            }
        } while (i != -1);
        bufRead.close();
        bufWrite.close();
    }
} 
        
  

Create a class called Student. Write a student manager program to manipulate the student information from files by using FileInputStream and FileOutputStream

 
         

import java.io.FileInputStream;
import java.io.FileOutputStream;

public class Student {

    public static void main(String[] args) {
        System.out.println("-------Writing Data in File-------");
        try {
            FileOutputStream fout = new FileOutputStream("stdinfo.txt");
            String str = "Nmae : Sachin, Stream : Computer Engineering, Sem : 5th Sem";
            byte b[] = str.getBytes();
            fout.write(b);
            fout.close();
            System.out.println("successful write.");
        } catch (Exception e) {
            System.out.println(e);
        }
        System.out.println("-------Retrive Data From File-------");
        try {
            FileInputStream fin = new FileInputStream("stdinfo.txt");
            int i = 0;
            while ((i = fin.read()) != -1) {
                System.out.print((char) i);
            }
            fin.close();
        } catch (Exception e) {
            System.out.println(e);
        }
    }
}