gistfile1.java

  int count = Files.readLines( 
      new File("/path/to/file"), 
      Charsets.UTF_8, // remember that? :) 
      new LineProcessor<Integer>() { 
        int count = 0; 
        public boolean processLine(String line) { 
          count++; 
        } 
        public Integer getResult() { return count; } 
      });