【问题】

I am trying to code to read info from a text file, I need to find out how many times each word separated by white space occurs. I then need to output in alphabetical order with the count of each word. I am looking to use a TreeMap, keySet() and an Iterator. My code is very incomplete and I am quite stuck.

    import java.util.HashMap;

    import java.util.Map

    public class WordCount<E extends Comparable<E>> {

        private static Map<String, Integer> map = new HashMap<String, Integer>();

        static {

            fillMap(map, "Alice.txt");

        }

        private static void fillMap(Map<String, Integer> map, String fileName) {

       }

}

【回答】

       将文件拆成单词集合，之后按单词分组汇总即可，但JAVA编码复杂度较高，建议用SPL写好脚本再嵌入Java：

A1：从文本读取字符串

A2：将字符串拆分成单个单词组成的序列

A3：采用累计的方式对单词分组，并统计每种单词的数量

  SPL的groups就是用java的hashmap实现的，性能很好。写好的脚本如何在应用程序中调用，可以参考Java 如何调用 SPL 脚本