import java.io.IOException;
import java.nio.file.FileStore;
import java.nio.file.Files;
import java.nio.file.Paths;

public class Test {
    public static void main(String[] args) {
        try {
            String p="x:";
            System.out.println(Files.exists(Paths.get(p)));
            FileStore fileStore = Files.getFileStore(Paths.get(p));
            System.out.println(fileStore.getTotalSpace());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}