Use a Hash Table

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Hello World

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Define a Class

pop

key	value
France	60000000
China	1300000000

You can use a hash table to record a number against the name of each country.

.

import java.util.HashMap; public class Demo{ public static void main(String[] argv) { HashMap<String,Long> pop = new HashMap<String,Long>(); pop.put("France",60000000L); pop.put("China",1300000000L); System.out.println(pop.get("France")); } }

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