如何转换成10进制啊
**package com.serialPort.writer;
import java.math.BigInteger;
public class Test {
public static void main(String[] args) {
byte[] data = {0x5d,(byte) 0x99,0x00,0x66};//5d990066
BigInteger bigInteger = new BigInteger(1, data);
String a = bigInteger.toString(16);//转换成16进制
String a1 = a.substring(0, 4);//截取想要的数据
System.out.println(a1);
}
}**