подскажите пожалуйста в чём проблема
package com.javarush.task.task15.task1527;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/*
Парсер реквестов
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String[] list;
List<String> newList = new ArrayList<String>();
String url = reader.readLine();
String str = url.substring(url.indexOf('?') + 1);
list = str.split("\\&");
double d = 0;
String s = "";
for (String i : list) {
if (i.contains("=")) {
int ind = i.indexOf("=");
String sub = i.substring(0, ind);
newList.add(sub);
} else newList.add(i);
if (i.contains("obj")) {
if (i.contains(".")){
int ind = i.indexOf(".");
String sub = i.substring(ind - 1);
try {
d = Double.parseDouble(sub);
} catch (Exception e) {
s = sub;
}
}
}
}
for (String z : newList) {
System.out.print(z + " ");
}
System.out.println();
if (d != 0) {
alert(d);
} else if(!s.isEmpty()){ alert(s);}
}
public static void alert(double value) {
System.out.println("double: " + value);
}
public static void alert(String value) {
System.out.println("String: " + value);
}
}