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//: enumerated/EnumMaps.java

// Basics of EnumMaps.

package enumerated;

import java.util.*;

import static enumerated.AlarmPoints.*;

import static net.mindview.util.Print.*;

interface Command { void action(); }

public class EnumMaps {

public static void main(String[] args) {

EnumMap<AlarmPoints,Command> em =

new EnumMap<AlarmPoints,Command>(AlarmPoints.class);

em.put(KITCHEN, new Command() {

public void action() { print("Kitchen fire!"); }

});

em.put(BATHROOM, new Command() {

public void action() { print("Bathroom alert!"); }

});

for(Map.Entry<AlarmPoints,Command> e : em.entrySet()) {

printnb(e.getKey() + ": ");

e.getValue().action();

}

try { // If there's no value for a particular key:

em.get(UTILITY).action();

} catch(Exception e) {

print(e);

}

}

} /* Output:

BATHROOM: Bathroom alert!

KITCHEN: Kitchen fire!

java.lang.NullPointerException

*///:~