Decode D6 Fitness data AT+DATA= 1-8

import java.lang.Math;
public class HelloWorld
{
  public static void main(String[] args)
  {
        ParserData parserData1 = parser(new int[]{ 0x52,0x5D,0xD7,0x9F,0x00,0x31 },false);
   
    System.out.print("Flag:");
    System.out.print(parserData1.flag);
    System.out.print("\r\nSeconds in unix -40 Years: ");
    System.out.print(parserData1.secondTime);
    System.out.print("\r\nData Value: ");
    System.out.print(parserData1.value);
    System.out.print("\r\nData Value1:");
    System.out.print(parserData1.value1);
  }
    public static class ParserData {
        public int flag;
        public long secondTime;
        public int value;
        public int value1;
    }

    public static ParserData parser(int[] arr, boolean realTime) {
        int s;
        if (!realTime) {
            boolean b = true;
            int length = arr.length;
            int i = 0;
            while (true) {
                if (i >= length) {
                    break;
                } else if (arr[i] != 255) {
                    b = false;
                    break;
                } else {
                    i++;
                }
            }
            if (b) {
                return null;
            }
        }
        int time = 0;
        int usetime = 0;
        int flag = (arr[0] >> 6) & 3;
        int s2 = 0;
        while (true) {
            s = s2;
            if (s >= 4) {
                break;
            }
            int s3 = s + 1;
            time = (time << 16) | arr[s3] | (arr[s] << 8);
            s2 = s3 + 1;
        }
        int time2 = time & 1073741823;
        int s4 = s + 1;
        int s5 = s4 + 1;
        int value = (arr[s] << 8) | arr[s4];
        if (realTime) {
            int s6 = s5 + 1;
            usetime = (arr[s5] << 8) | arr[s6];
            int i2 = s6 + 1;
        }
        ParserData parserData = new ParserData();
        parserData.flag = flag;
        parserData.secondTime = (long) time2;
        parserData.value = value;
        parserData.value1 = usetime;
        return parserData;
    }
}