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());

------解决方案--------------------

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();
    }