code: public long skip(long n) throws IllegalArgumentException, IOException {
  
          if (lookaheadChar == UNDEFINED) {
              lookaheadChar = super.read();
          }
  
          // illegal argument
          if (n < 0) {
              throw new IllegalArgumentException("negative argument not supported");
          }
  
          // no skipping
          if (n == 0 || lookaheadChar == END_OF_STREAM) {
              return 0;
          }
  
          // skip and reread the lookahead-char
          long skiped = 0;
          if (n > 1) {
              skiped = super.skip(n - 1);
          }
          lookaheadChar = super.read();
          // fixme uh: we should check the skiped sequence for line-terminations...
          lineCounter = Integer.MIN_VALUE;
          return skiped + 1;
      }
docs: Skips char in the stream
  
  ATTENTION: invalidates the line-counter !!!!!
  
  @return nof skiped chars