控制台传入字符串用逗号隔开，判断是否是回文

<span style="font-size:18px;">String in = sc.next();
String s="";
in.split(",");
for (int i = in.length()-1; i >=0; i--) {
s+=in.charAt(i);
}
if (s.toString().equals(in)) {
System.out.println("it is huiwen");
}else{
System.out.println("not it is");
}</span>