题解 | #按照格式输入并交换输出#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.next();

        String[] ss = s.split(",");
        String a,b;
        b = ss[0].substring(ss[0].substring(0,ss[0].indexOf("=")).length()+1);
        a = ss[1].substring(ss[1].substring(0,ss[1].indexOf("=")).length()+1);

        System.out.print("a="+a+",b="+b);
    }
}