/**
* @author lautturi.com
* Java example: access nonexistent key in java hashmap
*/
import java.util.*;
public class Lautturi {
public static void main(String[] args) {
HashMap<Integer,String> map = new HashMap<>();
map.put(1,"Apple");
map.put(2,"Banana");
map.put(3,"Cherry");
map.put(4,"Orange");
map.put(5,"Lautturi");
map.get(3); // returns Cherry
map.get(8); // returns null
System.out.println(map.get(3));
System.out.println(map.get(8));
}
}
output:
Cherry null