static CoderResult overflow(CharBuffer input,int i,CharBuffer output,int j){
  input.position(i - input.arrayOffset());
  output.position(j - output.arrayOffset());
  return CoderResult.OVERFLOW;
}

static CoderResult overflow ( CharBuffer input , int i , CharBuffer output , int j ) { input . position ( i - input . arrayOffset ( ) ) ; output . position ( j - output . arrayOffset ( ) ) ; return CoderResult . OVERFLOW ; }
internal helper method to properly position buffers after encoding up until an overflow .
