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

public class ReadWriteFile
{
  public static void main(String[] args) throws Exception {
    BufferedReader inputStream = null;
    PrintWriter outputStream = null;

    try
    {
      inputStream = new BufferedReader
      (new FileReader("C:/apps/data.txt"));
      outputStream = new PrintWriter
      (new FileWriter("C:/apps/dataOut.txt"));

      System.out.println("start file read");
      String l;
      while ((l = inputStream.readLine()) != null)
      {
        outputStream.println(l);
      }
      System.out.println("End file write");
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
    finally
    {
      if (inputStream != null)
      {
        inputStream.close();
      }
      if (outputStream != null)
      {
        outputStream.close();
      }
    }
  }
}

sun.io.MalformedInputException
	at sun.io.ByteToCharUTF8.convert(ByteToCharUTF8.java:262)
	at sun.nio.cs.StreamDecoder$ConverterSD.convertInto(StreamDecoder.java:316)
	at sun.nio.cs.StreamDecoder$ConverterSD.implRead(StreamDecoder.java:366)
	at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:252)
	at java.io.InputStreamReader.read(InputStreamReader.java:212)
	at java.io.BufferedReader.fill(BufferedReader.java:157)
	at java.io.BufferedReader.readLine(BufferedReader.java:320)
	at java.io.BufferedReader.readLine(BufferedReader.java:383)

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

public class ReadWriteFile
{
  public static void main(String[] args) throws Exception {
    BufferedReader inputStream = null;
    PrintWriter outputStream = null;

    try
    {
      File in = new File("C:/apps/data.txt");
      InputStreamReader inreader = new InputStreamReader(
          new FileInputStream(in), "UTF-8");
      inputStream = new BufferedReader(inreader);

      File out = new File("c:/apps/dataOut.txt");
      OutputStreamWriter outwriter = new OutputStreamWriter(
          new FileOutputStream(out), "UTF-8");
      outputStream = new PrintWriter(outwriter);

      System.out.println("start file read");
      String l;
      while ((l = inputStream.readLine()) != null)
      {
        outputStream.println(l);
      }

      System.out.println("End file write");
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
    finally
    {
      if (inputStream != null)
      {
        inputStream.close();
      }
      if (outputStream != null)
      {
        outputStream.close();
      }
    }
  }
}

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