What will be the output of the following program?
import java.util.*;
public class Wonder {
private enum Gender {
M, F
}
public static void main(String[] args) {
printSize(new HashMap<Gender, Gender>());
printSize(new EnumMap<Gender, Gender>(Gender.class));
}
private static void printSize(Map<Gender, Gender> map) {
map.put(Gender.M, Gender.F);
map.put(Gender.F, Gender.M);
map.put(Gender.M, Gender.M);
map.put(Gender.F, Gender.F);
Set<Map.Entry<Gender, Gender>> set = new HashSet<Map.Entry<Gender, Gender>>(map.entrySet());
for (Map.Entry<Gender, Gender> e : map.entrySet())
set.add(new AbstractMap.SimpleEntry<Gender, Gender>(e.getKey(), e.getValue()));
System.out.print(set.size());
}
}
Strings1974
