public final boolean at(String str,CharSequence csq){
  int i=index;
  int length=csq.length();
  for (int j=0; j < str.length(); ) {
    if ((i >= length) || (str.charAt(j++) != csq.charAt(i++)))     return false;
  }
  return true;
}

public final boolean at ( String str , CharSequence csq ) { int i = index ; int length = csq . length ( ) ; for ( int j = 0 ; j < str . length ( ) ; ) { if ( ( i >= length ) || ( str . charAt ( j ++ ) != csq . charAt ( i ++ ) ) ) return false ; } return true ; }
indicates if this cursor points to the specified characters in the specified sequence .
