com.github.xingshuangs.iot.utils.LongUtil Maven / Gradle / Ivy
/*
* MIT License
*
* Copyright (c) 2021-2099 Oscura (xingshuang)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.github.xingshuangs.iot.utils;
/**
* @author xingshuang
*/
public class LongUtil {
private LongUtil() {
}
/**
* 将long转换为字节数组
*
* @param data long数据
* @return 字节数组
*/
public static byte[] toByteArray(long data) {
return toByteArray(data, false);
}
/**
* 将long转换为字节数组
*
* @param data long数据
* @param littleEndian true:小端，false：大端
* @return 字节数组
*/
public static byte[] toByteArray(long data, boolean littleEndian) {
byte[] bytes = new byte[8];
if (littleEndian) {
bytes[0] = (byte) ((data) & 0xFF);
bytes[1] = (byte) ((data >> 8) & 0xFF);
bytes[2] = (byte) ((data >> 16) & 0xFF);
bytes[3] = (byte) ((data >> 24) & 0xFF);
bytes[4] = (byte) ((data >> 32) & 0xFF);
bytes[5] = (byte) ((data >> 40) & 0xFF);
bytes[6] = (byte) ((data >> 48) & 0xFF);
bytes[7] = (byte) ((data >> 56) & 0xFF);
} else {
bytes[0] = (byte) ((data >> 56) & 0xFF);
bytes[1] = (byte) ((data >> 48) & 0xFF);
bytes[2] = (byte) ((data >> 40) & 0xFF);
bytes[3] = (byte) ((data >> 32) & 0xFF);
bytes[4] = (byte) ((data >> 24) & 0xFF);
bytes[5] = (byte) ((data >> 16) & 0xFF);
bytes[6] = (byte) ((data >> 8) & 0xFF);
bytes[7] = (byte) ((data) & 0xFF);
}
return bytes;
}
}