java - How do I determine that a FileInputStream points to the same file as a FileOutputStream?

Question

Can I get the associated file out of a FileInputStream or a FileOutputStream? I want to tell if they are pointing to the same file. But basically I want to see if I can get a reference to the File that belongs to the FileInputStream or FileOutputStream. Is there a class like that I can use? Or can I get it out of FileInputStream or FileOutputStream?

Answer 1

这就是我所做的：

public class FileAwareFileInputStream extends FileInputStream {
    private File file;

    public FileAwareFileInputStream(File file) throws FileNotFoundException {
        super(file);
        this.file = file;
    }

    public File getFile() {
        return this.file;
    }
}

FileOutputStream 也是如此。