java 输入一个二进制数,把它转换为十进制数并输出

import java.util.Scanner;public class Test { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.println("输入一个二进制数: "); String a = sc.nextLine(); int d = Integer.parseInt(a, 2); // 2进制 int o = In