[Java]File.isDirectory() equivalent inside jar

[hellblade]

My file structure is:

myJar.jar
|
|-->aDirectory/
| |
| |-->aFile
|
|-->MyClass.class

and I want to do something like


File f = new File(getClass().getResource("aDirectory").toURI());
if(f.isDirectory())
//do something
else
//do something else

but when it runs inside a jar I get:

Exception in thread "main" java.lang.IllegalArgumentException: URI is not hierarchical

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EDIT: I found a solution and I give it bellow for anyone interested.



InputStream is = getClass().getClassLoader().getResourceAsStream("path/file");

if(is == null) {
// file does not exist
}else if(is.getClass().getSimpleName().equals("ByteArrayInputStream")) {
// isDirectory() equivalent
} else if(is.getClass().getSimpleName().equals("BufferedInputStream")) {
// isFile() equivalent
}



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EDIT2: Unfortunately that didn't work inside the jar since the stream returned in that case is always JarURLInputStream:(

So the question remains unanswered.