Single quoted attribute values are a little cleaner

import java.math.BigInteger;
import java.io.*;


public class FibonacciApos {

  public static void main(String[] args) {
   
    try {
      OutputStream  fout = new FileOutputStream("fibonacci_apos.xml");
      Writer out = new OutputStreamWriter(fout);      
      
      BigInteger low  = BigInteger.ONE;
      BigInteger high = BigInteger.ONE;      
      
      out.write("<?xml version='1.0'?>\r\n");  
      out.write("<Fibonacci_Numbers>\r\n");  
      for (int i = 1; i <= 25; i++) {
        out.write("  <fibonacci index='" + i + "'>");
        out.write(low.toString());
        out.write("</fibonacci>\r\n");
        BigInteger temp = high;
        high = high.add(low);
        low = temp;
      }
      out.write("</Fibonacci_Numbers>");  
 
      out.close();
    }
    catch (IOException e) {
      System.err.println(e);
    }

  }

}

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Copyright 2000-2005 Elliotte Rusty Harold
elharo@metalab.unc.edu
Last Modified March 26, 2003