Filling in Java - How To Read & Write A File in Java

Java Program to Create a File & Write Data into it

Code:

import java.util.*;

import java.io.*;

public class Test

{

public static void main (String args[])

{

Scanner s=new Scanner (System.in);

String a;

int m = 0;

try

{

FileOutputStream fos=new FileOutputStream ("Test.data");

DataOutputStream dos=new DataOutputStream (fos);

for (int i=1; i<=5; i++)

{

System.out.print ("Enter the name:");

a=s.next();

System.out.print ("Enter the marks:");

                      m = s.nextInt();

dos.writeUTF(a);

dos.writeInt(m);

}

}

catch (Exception e)

{

System.out.print ("Invalid");

}

}

}

Java Program to Read the File Created Above

Code:

import java.io.*;

public class Test1

{

public static void main (String args[])

{

String s;

int a;

try

{

FileInputStream fis=new FileInputStream ("F:\\Test\\Test.data");

DataInputStream dis=new DataInputStream (fis);

while (true)

{

s=dis.readUTF();

a=dis.readInt();

System.out.print ("\nName:"+s);

System.out.print ("\nMarks:"+a);

}

}

catch (Exception e)

{

System.out.print ("\nEOF");            //EOF means End Of File.

}

}

}