Java：查找文件的最后一行是否为空

如果要确定最后一行是否具有CRLF，则可以从末尾读取。

public static boolean lastLineisCRLF(String filename) {    RandomAccessFile raf = null;    try {        raf = new RandomAccessFile(filename, "r");        long pos = raf.length() - 2;        if (pos < 0) return false; // too short        raf.seek(pos);        return raf.read() == 'r' && raf.read() == 'n';    } catch (IOException e) {        return false;    } finally {        if (raf != null) try { raf.close();        } catch (IOException ignored) {        }    }}