can anyone give any hint .
thank you!
package com.codegym.task.task35.task3505;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/*
List to Map
*/
public class Solution {
public static void main(String[] args) {
List<ConvertibleUser> users = new ArrayList<>();
users.add(new ConvertibleUser(234, "First User"));
users.add(new ConvertibleUser(235, "Second User"));
users.add(new ConvertibleUser(236, "Third User"));
Map<Integer, ConvertibleUser> newMap = ConvertibleUtil.convert(users);
System.out.println(newMap);
// {236=ConvertibleUser{id=236, name='Third User'},
// 235=ConvertibleUser{id=235, name='Second User'},
// 234=ConvertibleUser{id=234, name='First User'}}
//////////////////////////////////////////////////////////
List<ConvertibleBook> books = new ArrayList<>();
books.add(new ConvertibleBook("First Book"));
books.add(new ConvertibleBook("Second Book"));
books.add(new ConvertibleBook("Third Book"));
Map<String, ConvertibleBook> bookMap = ConvertibleUtil.convert(books);
System.out.println(bookMap);
// {Third Book=ConvertibleBook{name='Third Book'},
// First Book=ConvertibleBook{name='First Book'},
// Second Book=ConvertibleBook{name='Second Book'}}
}
}