Question

java教程 如何将四个字节拼装成一个整型

Answer 1

这样？
public class Test {
public static void main(String[] args) {
byte b1 = 1;
byte b2 = 2;
byte b3 = 3;
byte b4 = 4;
String temp = "" + b1 + b2 + b3 + b4;
Integer i = new Integer(temp);
System.out.println(i);
}
}

Answer 2

byte b1 = 1;
byte b2 = 2;
byte b3 = 3;
byte b4 = 4;

int a1 = (int)b1<<24;
int a2 = (int)b2<<16;
int a3 = (int)b3<<8;
int a = a1 + a2 + a3 + b4;

看你的高位和低位可以改下b1,b2,b3,b4的顺序

Answer 3

Answer 4

没弄懂题目的意思，望补充一下