title: java.io.FileNotFoundException: .. (No such file or directory)
body: <p>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. </p>
  
  <p>Most surprisingly I get the following exception:</p>
  
  <pre><code>[ 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)
  ...
  </code></pre>
  
  <p>but such directory and such file do actually exist in the current path.</p>
  
  <p>Why may this happen?</p>