java如何统计单词个数

Question

我是大一新生，刚学到对象的概念。所以请用最简单的方法，没学过map，谢谢各位大神了。

Answer 1

以空格分割.

  String str = "I am a student";
  String[] arr = str.split(" ");
  System.out.println("共"+arr.length+"个单词");
  for(String item:arr) System.out.println(item);

或者用StringTokenizer类实现.

 String s = "I am a boy. I come from china. I love my country.";
        StringTokenizer token = new StringTokenizer(s, " ");
        System.out.println(token.countTokens());
        while(token.hasMoreElements()){
            String element = (String)token.nextElement();
            System.out.println(element);
        }