Question

I wrote this code to convert binary data to ascii , now I want to write the console result into a textfile output.txt . it runs but the problem is it prints the first line into console and start writing the output to textfile from the second line , on other words it skip the fisr line !

public static void main(String args[])
  {
  try{
  // Open the file that is the first 
  // command line parameter
  FileInputStream fstream = new FileInputStream("textfile.txt");
  // Get the object of DataInputStream
  DataInputStream in = new DataInputStream(fstream);
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
  String strLine;
  //Read File Line By Line
  while ((strLine = br.readLine()) != null)   {

      String input = br.readLine();
            String output = "";
            for(int i = 0; i <= input.length() - 8; i+=8)
            {
                int k = Integer.parseInt(input.substring(i, i+8), 2);
                output += (char) k;
            }

                System.out.println("string: " + output);
          orgStream = System.out;
          fileStream = new PrintStream(new FileOutputStream("d:/output.txt",true));

          // Redirecting console output to file
          System.setOut(fileStream);


              } 
  //Close the input stream
  in.close();
    }catch (Exception e){//Catch exception if any
  System.err.println("Error: " + e.getMessage());
  }
  }
}

these line are responsible for writing the result into output.txt:

 System.out.println("string: " + output);
          orgStream = System.out;
          fileStream = new PrintStream(new FileOutputStream("d:/output.txt",true));

          // Redirecting console output to file
          System.setOut(fileStream);

how can I save output in eclipse to be able to use that again ? now I save in D drive

Answer 1

the code
System.err.println("Error: " + e.getMessage()); will write to the error stream and not the out stream..

          System.setOut(out);

here you are setting the out stream, the err stream still defaults to the console.