如何在node.js中设置一个环境变量?(How can I set an environmental variable in node.js?)
如何在node.js中设置一个环境变量?
我宁可不依赖任何特定的平台,比如运行export或者cmd.exe的设置。
How can I set an environmental variable in node.js?
I would prefer not to rely on anything platform specific, such as running export or cmd.exe's set.
原文:https://stackoverflow.com/questions/10829433
满意答案
假设您输入
a<Enter>
您的缓冲读取器读取
a
字符:char ch =(char)buf.read();
然后它读取行的结尾:
buf.readLine()
该行的结尾是一个空字符串。 因此,错误消息(你应该仔细阅读 ,因为它告诉你你想要解析为一个整数,从而解释了这个问题):
java.lang.NumberFormatException:用于输入字符串:“”
Solved it!!It's not a way u can use all the time but it can be used in simpler n shorter programs. Just accept the other values first then accept the char value(accept char in the end--after accepting all values of all other data types). The following is the code to accept a character to accept a character using BufferedReader:
System.out.println("Enter the Character"); char ch =(char)buf.read();
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