Suppose we want to use a different encoding than UTF-8

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


public class FibonacciLatin1 {

  public static void main(String[] args) {

    try {
      FileOutputStream fout
       = new FileOutputStream("fibonacci_8859_1.xml");
      OutputStreamWriter out = new OutputStreamWriter(fout, "8859_1");

      BigInteger low  = BigInteger.ZERO;
      BigInteger high = BigInteger.ONE;

      out.write("<?xml version=\"1.0\" encoding=\"8859_1\"?>\r\n");
      out.write("<Fibonacci_Numbers>\r\n");
      for (int i = 0; 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, 2001 Elliotte Rusty Harold
elharo@metalab.unc.edu
Last Modified February 3, 2000