Java中如何编解码

继续学习Java Web的编解码章节，记录Java中如何把ISO-8859、GB-2312、GBK、UTF-16、UTF-8编码进行编码。

额，System.out.printf(“%x ” , (int)b[i]) 这句代码没有懂，希望大家评论帮忙解决。

public static void toHex(char[] b) {
        for (int i = 0; i < b.length; i++) {
            System.out.printf("%x " , (int)b[i]);
        }
        System.out.println();
    }


    public static void toHex(byte[] b) {
        for (int i = 0; i < b.length; i++) {
            System.out.printf("%x " , b[i]);
        }
        System.out.println();
    }

    public static void encode(){
        String name = "I am 啃哥";
        toHex(name.toCharArray()); 
        try{
            byte[] iso8895 = name.getBytes("ISO-8859-1");
            toHex(iso8895);
            byte[] gb2312 = name.getBytes("GB2312");
            toHex(gb2312);
            byte[] GBK = name.getBytes("GBK");
            toHex(GBK);
            byte[] utf16 = name.getBytes("UTF-16");
            toHex(utf16);
            byte[] utf8 = name.getBytes("UTF-8");
            toHex(utf8);
        }catch(Exception e){
            e.printStackTrace();
        }
    }

参考网站：http://www.ibm.com/developerworks/cn/java/j-lo-chinesecoding/