package com.enterprisej2me.HttpConnections; import javax.microedition.io.*;public class BasicAuthHandler implements Handler {   private String username;  private String password;   public BasicAuthHandler (String u, String p) {    username = u;    password = p;  }   public void prepareHeaders(HttpConnection c) throws Exception {    String s = encode(username + ":" + password);    c.setRequestProperty("Authorization", "Basic " + s);  }   public boolean processHeaders (HttpConnection c) throws Exception {    // Do nothing. Do not respond to the challenge    return false;  }  // Base64 encoding.  //  // This implementation is adopted from Kenneth Ballard's  // HttpClient package. Released under LGPL.  private String encode(String d) {    String c = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" +               "abcdefghijklmnopqrstuvwxyz" +               "0123456789+/";     byte [] code = c.getBytes();    byte [] s = d.getBytes();     int x;    int y = d.length() - (d.length() % 3);    byte [] coded = new byte[4];    String dest = "";     for(x = 0; x < y; x += 3) {      coded[3] = code[s[x + 2] % 64];      coded[0] = code[s[x] >> 2];      coded[1] = new Integer((s[x] % 4) << 4).byteValue();      coded[1] += s[x + 1] >> 4;      coded[1] = code[coded[1]];       coded[2] = new Integer((s[x + 1] % 16) << 2).byteValue();      coded[2] += s[x + 2] / 64;      coded[2] = code[coded[2]];       dest += new String(coded);    }     x = y;     if(s.length % 3 == 0) return dest;     if(s.length % 3 == 1) {      coded[2] = '=';      coded[3] = '=';      coded[0] = code[s[x] >> 2];      coded[1] = code[new Integer((s[x] % 4) << 4).byteValue()];       dest += new String(coded);    }     if(s.length % 3 == 2) {      coded[3] = '=';       coded[0] = code[s[x] >> 2];      coded[1] = new Integer((s[x] % 4) << 4).byteValue();      coded[1] += s[x + 1] >> 4;      coded[1] = code[coded[1]];       coded[2] = code[new Integer((s[x + 1] % 16) << 2).byteValue()];       dest += new String(coded);    }     return dest;  }}