在线程“主要”数字格式异常例外：输入字符串：”；

Exception in thread "main" java. lang. NumberFormatException: For input string: ";

youdao

如果指定了多个输出格式，那么将生成一个错误(异常)并且不会运行报告。

If multiple output formats are specified, an error (exception) will be generated and the report will not be run.

youdao

如果字符串不能为空或者必须为特定格式，请检查格式并抛出异常。

If the string can't be empty or must be in a specific format, check for the format and throw an exception.

youdao

I'm much better having an exception get handled at the time of input than to let that prop -- that value rather propagate through a whole bunch of code until eventually it hits an error 17 calls later, and you have no clue where it came from.

不是我期望的格式,这时我最好有一个异常处理,而不是让其传下去,这个值传到代码的整个分支,最终会导致一个错误17调用的发生，并且你不知道这个错误是哪里来的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Right, so an exception then has this format that I can control as a programmer.

好的，所以一个异常会有这样的格式,我能把他当做一个程序员来控制。

麻省理工公开课 - 计算机科学及编程导论课程节选