Mark一下.根据文件路径获取文件名的java方法

public static String getFileName(String filePathName) {
        int pos = 0;
        pos = filePathName.lastIndexOf(47);
        if(pos != -1)
            return filePathName.substring(pos + 1, filePathName.length());
        pos = filePathName.lastIndexOf(92);
        if(pos != -1)
            return filePathName.substring(pos + 1, filePathName.length());
        else
            return filePathName;
    }