efg

 public boolean encodeFile(File srcFile,File targetFile)
 {
  boolean result = false;
  InputStream inputStream = null;
  OutputStreamWriter outputStreamWriter = null;
  OutputStream outputStream = null;
  int b = 0;
  try {
   inputStream = new FileInputStream(srcFile);
   outputStream = new FileOutputStream(targetFile);
   outputStreamWriter = new OutputStreamWriter(outputStream);
   boolean flag = false;
   String rr = null;
   while(true)
   {
    b = inputStream.read();
    flag = b==-1;
    if(flag)
    {
     break;
    }
    rr = integerConvert(b, radix);
    outputStreamWriter.write(rr);
   }
   outputStreamWriter.flush();
   outputStreamWriter.close();
   outputStream.close();
   inputStream.close();
   result = true;
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return result;
 }
 
// public File[] splitFile(File srcFile,long unitByteSize)
// {
//  byte[] buffer = new byte[buffSize];
//  int num = 0;
// }

 public static void main(String[] args) {
  File srcFile = new File("D:\\testData\\HTMT\\apache-ant-1.9.4-bin.zip");
  File targetFile = new File("D:\\testData\\HTMT\\en");
  FileByteConvert fileByteConvert = new FileByteConvert();
//  fileByteConvert.encodeFile(srcFile, targetFile);
  
  srcFile = targetFile;
  targetFile = new File("D:\\testData\\HTMT\\de.zip");
  fileByteConvert.decodingFile(srcFile, targetFile);
 }