扫描仪类混乱 [英] Scanner class confusion
问题描述
嗨所有
i从sun的网站上阅读扫描仪类文档，我想我会尝试编写一个程序来存储从用户到var输入的行，然后解析它在白色空间然后取决于新的字符串是什么我将做什么。我认为有一种比我想要的更简单的方法，但我只是想在我继续下一步之前让这些概念失效。我在循环条件中遇到不兼容的类型错误
hi all
i read the scanner class documentation from sun''s website and i thought i would have some fun trying to write a program that stores a line from the user to var input and then parses it on white space then depending on what the new string is i will do somthing. i think there is an easier way than what i am trying but i am just trying to get these concepts down before i move on to my next step. i am getting an incompatiable types error in my loop condition
推荐答案
嗨所有
i从sun的网站上阅读扫描仪类文档，我想我会尝试编写一个程序来存储从用户到var输入的一行然后在白色空间解析它，然后根据新字符串是什么我将做什么。我认为有一种比我想要的更简单的方法，但我只是想在我继续下一步之前让这些概念失效。我在循环条件中遇到不兼容的类型错误
hi all
i read the scanner class documentation from sun''s website and i thought i would have some fun trying to write a program that stores a line from the user to var input and then parses it on white space then depending on what the new string is i will do somthing. i think there is an easier way than what i am trying but i am just trying to get these concepts down before i move on to my next step. i am getting an incompatiable types error in my loop condition
你比较两个字符串的方式
The way you are comparing two strings
嗨！
即使你可以将字符串与等于-symbol进行比较，您的代码中会出错：为了进行比较，请始终使用 == 而不是 = 。第一个用于比较，第二个用于定义值。那不是你想要做的，是吗？因为那不会返回布尔值。
问候，
Nepomuk
Hi!
Even if you could compare Strings with the "equals"-symbol, there would be an error in your code: for comparison, always use == instead of =. The first is for comparing, the second for defining values. That''s not what you want to do here, is it? Because that will not return a boolean.
Greetings,
Nepomuk
你好，
即使使用 == 来比较字符串也不是一个好主意。有时它也会给你错误。始终使用equals（String str）方法来比较字符串：）
Hi,
Even using == for comparing strings is not a good idea. Sometimes it can give you errors also. Always use equals(String str) method to compare strings :)
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