FileSystemUtils.java

FileSystemUtils.java

import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class FileSystemUtils {
    private static Object FS;
    private static Method GET_ATTRIBUTES;

    static {
        try {
            Field field = File.class.getDeclaredField("fs");
            field.setAccessible(true);

            FS = field.get(null);
            if(FS != null) {
                try {
                    GET_ATTRIBUTES = FS.getClass().getDeclaredMethod("getBooleanAttributes0", File.class);
                    GET_ATTRIBUTES.setAccessible(true);
                } catch (Exception ex) {
                    GET_ATTRIBUTES = null;
                }
            }
        } catch (Exception e) {
            throw new AssertionError(e);
        }
    }

    public static boolean exists(File path) {
        try {
            return GET_ATTRIBUTES != null
                ? ((Integer) GET_ATTRIBUTES.invoke(FS, path)) > 0
                : path.exists();
        } catch (Exception e) {
            return path.exists();
        }
    }
}