解码和编码

    public static void main(String[] args) throws IOException {

        // 编码：将字符编译为字节，可以用默认的utf-8或者指定的字符集编码
        String s = "真正的大师永远都怀着一颗学徒的心";
        byte[] bytes = s.getBytes();
        System.out.println(Arrays.toString(bytes));
        byte[] bytes2 = s.getBytes("GBK");
        System.out.println(Arrays.toString(bytes2));

        // 解码：将字节解码成字符，可以用默认的uft-8或者指定字符集解码
        byte[] bytes3 = {-25, -100, -97, -26, -83, -93};
        String s1 = new String(bytes3);
        System.out.println(s1);

        String s2 = new String(bytes3, "GBK");
        System.out.println(s2);
    }