代码总是报错，不知道哪里有问题，请大家帮我看看，可是在idea上可以运行的啊

package zh.codegym.task.task07.task0726; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; /* Cat 代码将无法编译 */ public class Solution { static ArrayList<Cat> CATS = new ArrayList<Cat>(); public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); while (true) { String name = reader.readLine(); if (name.isEmpty()) { break; } else{ int age=Integer.parseInt(reader.readLine()); int weight=Integer.parseInt(reader.readLine()); int tailLength=Integer.parseInt(reader.readLine()); Cat cat = new Cat(name,age,weight,tailLength); CATS.add(cat); } } printList(); } public static void printList() { for(int i=0;i<CATS.size();i++) { System.out.println(CATS.get(i)); } } public static class Cat { private String name; private int age; private int weight; private int tailLength; public Cat(String name, int age, int weight, int tailLength) { this.name = name; this.age = age; this.weight = weight; this.tailLength = tailLength; } @Override public String toString() { return "猫的名字：" + name + "，年龄：" + age + "，体重：" + weight + "，尾巴：" + tailLength; } } }