nfe.printStackTrace();//写一大段
// System.out.println(nfe.getMessage()); the output result was just "For input string "aa""
// System.out.println(nfe.getCause()); output "null"
// System.out.println(nfe.getLocalizedMessage()); the same as .getMessage
//stdErr.println(nfe.getMessage());// the same as .getMessage
然后就是 StringTokenizer 的用法。开始 vivizhyy 只凭着印象写参数,结果分出来的个数不对。
开始写的是 StringTokenizer stringTokenizer = new StringTokenizer(":");
这样分出来的还是会有那个 “:” 在结果中,查过 api 后,加上需要被分的字符串作为第一个参数,这样。那个“:” 就会被分掉了。(详见 SecondsCalculator)
ps.
StringTokenizer(String str)
Constructs a string tokenizer for the specified string.
StringTokenizer(String str,String delim)
Constructs a string tokenizer for the specified string.
StringTokenizer(String str,String delim
,boolean returnDelims
)Constructs a string tokenizer for the specified string.
第三种用法 vivizhyy 还没玩过还。
还有就是 StringTokenizer 这个类里面有个方法:countTokens()Calculates the number of times that this tokenizer's
nextToken
method can be called before it generates an
exception.恩,自己把 Quiz 做完了,好高兴。