Java – file path / name from InputStream

How do I get the file path / name from InputStream in Java?

Solution

It's impossible. (not FileInputStream in Java API) The FileInputStream constructor does not store this information in any field:

public FileInputStream(File file) throws FileNotFoundException {
    String name = (file != null ? file.getPath() : null);
    SecurityManager security = System.getSecurityManager();
    if (security != null) {
        security.checkRead(name);
    }
        if (name == null) {
            throw new NullPointerException();
        }
    fd = new FileDescriptor();
    open(name);
    }