二进制转16进制JAVA代码

public class Binary2Hex
{
public static void main(String[] args)
{
String bString ="10101000";//需要转的二进制代码
System.out.println(binaryString2hexString(bString));
}public static String binaryString2hexString(String bString)
{
if (bString == null || bString.equals("") || bString.length() % 8 != 0)
return null;
StringBuffer tmp = new StringBuffer();
int iTmp = 0;
for (int i = 0; i < bString.length(); i += 4)
{
iTmp = 0;
for (int j = 0; j < 4; j++)
{
iTmp += Integer.parseInt(bString.substring(i + j, i + j + 1)) << (4 - j - 1);
}
tmp.append(Integer.toHexString(iTmp));
}
return tmp.toString();
}
}