Doubt in java programming-2.

@morningdot-6Xuj4M • Oct 21, 2024

Oct 21, 2024

1.0K

hello friends,
I write a program to copy a text file in java.
But i didn't get the text in serial way.
Check out this

import java.io.*;
public class r
{
public static void main(String args[])throws IOException
{
FileInputStream f=new FileInputStream("monu.txt");
InputStreamReader isr=new InputStreamReader(f);
BufferedReader b=new BufferedReader(isr);
char s;
int t;
FileOutputStream ff=new FileOutputStream("kumar.txt");
OutputStreamWriter osr=new OutputStreamWriter(ff);
BufferedWriter br=new BufferedWriter(osr);
do
{
s=(char) b.read();
if((t=b.read())!=1)
br.write(s);
}
while((t=b.read())!=-1);
br.close();
}
}

any help will be appreciated.

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Manish Goyal

@manish-r2Hoep • Aug 28, 2010

Check this program .i have tried this by using both do while and while loop

using while loop output is perfect but using do while there is one extra character added

since in do while which is exit controlled loop first statement is executed then condition is checked therefore an extra character is added but in case of while loop which is entry controlled loop the ouptut is correct

import java.io.*;
public class T
{
public static void main(String args[])throws IOException
{
FileInputStream f=new FileInputStream("monu.txt");
InputStreamReader isr=new InputStreamReader(f);
BufferedReader b=new BufferedReader(isr);
int t;
FileOutputStream ff=new FileOutputStream("kumar.txt");
OutputStreamWriter osr=new OutputStreamWriter(ff);
BufferedWriter br=new BufferedWriter(osr);
/*while((t=b.read())!=-1)
{
br.write((char)t);
}*/

do
{
t=b.read();
br.write((char)t);
}
while(t!=-1);
br.close();
b.close();
}
}

Morningdot Hablu

@morningdot-6Xuj4M • Aug 28, 2010

Thanks goyal.
But it work fine in window but not in ubuntu.
It will show a character encoding error when i want to open it with gpedit.
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