java int转byte数组

int 转 byte[] 低字节在前(低字节序)
public static byte[] toLH(int n) {
byte[] b = new byte[4];
b[0] = (byte) (n & 0xff);
b[1] = (byte) (n >> 8 & 0xff);
b[2] = (byte) (n >> 16 & 0xff);
b[3] = (byte) (n >> 24 & 0xff);
return b;
}
int 转 byte[] 高字节在前(高字节序)
public static byte[] toHH(int n) {
byte[] b = new byte[4];
b[3] = (byte) (n & 0xff);
b[2] = (byte) (n >> 8 & 0xff);
b[1] = (byte) (n >> 16 & 0xff);
b[0] = (byte) (n >> 24 & 0xff);
return b;
}
byte[] 转 int 低字节在前(低字节序)
public int toInt(byte[] b){
int res = 0;
for(int i=0;i<b.length;i++){
res += (b[i] & 0xff) << (i*8);
}
return res;
}
byte[] 转 int 高字节在前(高字节序)
public static int toInt(byte[] b){
int res = 0;
for(int i=0;i<b.length;i++){
res += (b[i] & 0xff) << ((3-i)*8);
}
return res;
}

posted @ 2022-11-23 01:09  牧之丨  阅读(230)  评论(0编辑  收藏  举报