java StringTokenizer - nextToken可以返回null吗？ [英] java StringTokenizer - can nextToken return null?

问题描述

是否有任何StringTokenizer.nextToken将返回null的情况？
我正在尝试在我的代码中调试NullPointerException，到目前为止，我发现的唯一可能性是从nextToken（）返回的字符串返回null。这有可能吗？在java doc中没有找到任何内容。

Is there any case where StringTokenizer.nextToken will return null? I'm trying to debug a NullPointerException in my code, and so far the only possibility I've found is that the string returned from nextToken() returned null. Is that a possibility? Didn't find anything in the java doc.

谢谢

推荐答案

如果tokenizer的字符串中没有更多的标记，则nextToken（）抛出NoSuchElementException;所以我会说它不会返回null。

nextToken() throws NoSuchElementException if there are no more tokens in the tokenizer's string; so I would say that it doesn't return null.

http://download.oracle.com/javase/1.4.2/docs/api/java/util/StringTokenizer.html#nextToken （）

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