com.mycomm.itool.utils.BytesUtil Maven / Gradle / Ivy

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package com.mycomm.itool.utils;

public class BytesUtil {

  public static byte[] longToBytes(long longValue) {
    long l = longValue;
    byte[] result = new byte[8];
    for (int i = 7; i >= 0; i--) {
      result[i] = (byte) (l & 0xFF);
      l >>= 8;
    }
    return result;
  }

  public static long bytesToLong(byte[] b) {
    long result = 0;
    for (int i = 0; i < 8; i++) {
      result <<= 8;
      result |= b[i] & 0xFF;
    }
    return result;
  }

}