java的将byte[]（byte数组）转换成十六进制字符串方法，多谢

byte[] input=.....StringBuffer buff = new StringBuffer(input.length*4);for(int i=0;i<input.length;i++){    buff.append(String.format("0x%02X",input[i]));}system.out.println(buff.toString());
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Java code
public static String byteArrToHexStr(byte[] arr){        StringBuilder sb = new StringBuilder("0x ");        for(int i=0;i<arr.length;i++){            int b = arr[i];            int high = (arr[i]>>4 & 0x0f);            int low = arr[i] & 0x0f;            System.out.println(high+","+low);            if(high >= 10)sb.append((char)(high-10+'A'));            else sb.append(high);            if(low >= 10)sb.append((char)(low-10+'A'));            else sb.append(low);            sb.append(" ");            }        return sb.toString();    }