public void write(char cbuf[],int off,int len) throws IOException {
  if (_output == null)   throw new IOException("Writer closed");
  _tmpBuffer=cbuf;
  _output.append(_tmpBufferAsCharSequence,off,off + len);
  _tmpBuffer=null;
}

public void write ( char cbuf [ ] , int off , int len ) throws IOException { if ( _output == null ) throw new IOException ( "Writer closed" ) ; _tmpBuffer = cbuf ; _output . append ( _tmpBufferAsCharSequence , off , off + len ) ; _tmpBuffer = null ; }
writes a portion of an array of characters .
