java二进制和十六进制的相互转换

	/**
	 * 二进制转十六进制
	 * @param sb
	 * @param polynthic1
	 * @return
	 */
	private static int turnToHex(int[] polynthic1) {
		StringBuffer sb = new StringBuffer();
		for (int i = 0; i < polynthic1.length; i++) {
			sb.append(polynthic1[i]);
		}
		int keyTen = Integer.parseInt(sb.toString(), 2); // 2->10
		String result = String.format("%X", keyTen);
		byte by = (byte) Integer.parseInt(result, 16); // string->byte
		int ten = by & 0xff; // byte->int
		return ten;
	}

	/**
	 * 十六进制转二进制
	 * @param hex 十六进制数
	 * @return 二进制数
	 */
	private static int[] turnTwo(int hex) {
		int tenNum = Integer.parseInt(Integer.toHexString(hex).toUpperCase(), 16);
		String str = "";
		while (tenNum != 0) {
			str = tenNum % 2 + str;
			tenNum /= 2;
		}
		int[] ans = new int[8];
		for (int i : ans) {
			i = 0;
		}
		for (int i = 0; i < str.length(); i++) {
			ans[i] = str.charAt(i) - '0';
		}
		return ans;
	}