}
        return displaySize;
    }

    /**
     * Gets the currently used memory in bytes.
     *
     * @return used memory in bytes
     */
    public static long getUsedMemory() {
        final Runtime runtime = Runtime.getRuntime();
        final long freeBytes = runtime.freeMemory();
        final long totalBytes = runtime.totalMemory();
        return totalBytes - freeBytes;
    }