英文:
How to fix a FileNotFoundException?
问题
我试图从我的桌面读取一个文件，但是以下代码总是抛出一个FileNotFoundException异常：
try {
Scanner fileIn = new Scanner(new FileReader("project.csv"));
} catch (FileNotFoundException e) {
// 总是会抛出异常。
}
我该如何修复这个问题？
英文:
I am trying to read a file from my desktop, but the following code always throws a FileNotFoundException:
try {
Scanner fileIn = new Scanner(new FileReader("project.csv"));
} catch (FileNotFoundException e) {
// The exception is always thrown.
}
How do I fix this?
答案1
得分: 0
new FileReader("project.csv") 告诉读取器在当前工作目录中搜索文件，这很可能是您的用户文件夹。要在桌面上获取文件，可以使用：
new FileReader("/desktop/project.csv")
但为了安全起见，我建议使用绝对路径，还包括用户目录的路径：
new FileReader(System.getProperty("user.home") + "/desktop/project.csv")
英文:
new FileReader("project.csv") tells the reader to search for the file in the current working directory, which is most likely your user folder. To get files on the desktop, do:
new FileReader("/desktop/project.csv")
But just to be safe, I would use the absolute path and include the one to the user directory as well:
new FileReader(System.getProperty("user.home") + "/desktop/project.csv")
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