java.io.FileNotFoundException：..（无此类文件或目录）

Question

I had developed a Java project correctly working on Eclipse under Windows OS. Then I wanted to switch to Ubuntu. I just took the full workspace folder (included all resources file required for the running) from Windows and imported it in the Ubuntu's Eclipse.

Most surprisingly I get the following exception:

[ Test ] ERROR: unable to create myClass object. 
Check your implementation requirements!
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at Test.main(Test.java:183)
Caused by: java.io.FileNotFoundException: raw\file1.txt (No such file or directory)
...

but such directory and such file do actually exist in the current path.

Why may this happen?

Answer 1

在任何项目中都使用File.separator而不是"/" 。

Answer 2

使用正斜杠“ /”，因为它在Windows和非Windows平台的文件路径中都可以使用。