Help my project

[kut3_prince_9x]

import java.io.*;

public class chuyenDuLieu
{
public static boolean readln(FileInputStream f) throws IOException
{
String line = "";

while (f != null)
{
int ch = f.read();

if (ch < 0)
{
f.close();
f = null;
}

if ((ch == 13) || (ch == -1))
{
break;
}
else if (ch == 10)
{
line = "";
}
else
{
line = line + (char) ch;
}
}

System.out.println(line);

ByteArrayOutputStream f1 = new ByteArrayOutputStream();

String s = line;

byte buf[] = s.getBytes();

System.out.println(f.toString());

byte[] b = f1.toByteArray();

for (int i = 0; i < b.length; i++)

{
System.out.print(line);
}

OutputStream f2 = new FileOutputStream("xuat.txt");

f1.writeTo(f2);

f2.close();

f1.close();

return (f1 != null);
}

public static void printFile(String filePath1, String filePath2) throws IOException
{
FileInputStream f1 = null;
FileInputStream f2 = null;

try
{
f1 = new FileInputStream(filePath1);
f2 = new FileInputStream(filePath2);

while ((f1 != null) || (f2 != null))
{
if (!readln(f1))
{
f1 = null;
}

if (!readln(f2))
{
f2 = null;
}
}
}
catch (FileNotFoundException e)
{
e.printStackTrace();
System.out.println("Can't find file!");
}
catch (IOException e)
{
e.printStackTrace();
System.out.println("Can't read file!");
}
finally
{
if (f1 != null)
f1.close();
if (f2 != null)
f2.close();
}
}
public static void main(String args[])
{
try
{
printFile("test1.java", "test3.java");
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}


I want to transfer the results into txt file. Help me plz

[KevinWorkman]

When posting code, please use the code tags to preserve formatting.

Also, you don't actually tell us what the problem is. What's preventing you from transferring the results into a text file? Do you get an Exception of some kind? A strange behavior? Something else?