pl help. my code is not passing cerification
package com.codegym.task.task14.task1411;
import java.io.BufferedReader;
import java.io.InputStreamReader;
/*
User, loser, coder and programmer
*/
public class Solution {
public static void main(String[] args) throws Exception {
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
Person person = null;
String key = null;
while(true)
{
key = reader.readLine();
if (key.equals("user")){
person = new Person.User();
}
else if (key.equals("loser")){
person = new Person.Loser();
}
else if (key.equals("coder")){
person = new Person.Coder();
}
else if (key.equals("programmer")){
person = new Person.Programmer();
}
else break;
doWork(person);
}
}catch(Exception e){
}
}
public static void doWork(Person person) {
if (person instanceof Person.User) ((Person.User) person).live();
else if (person instanceof Person.Loser) ((Person.Loser) person).doNothing();
else if (person instanceof Person.Coder) ((Person.Coder) person).writeCode();
else if (person instanceof Person.Programmer) ((Person.Programmer) person).enjoy();
}
}