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| class EagerSingleton {
private static EagerSingleton eagerSingleton = new EagerSingleton(); private EagerSingleton() {
} public EagerSingleton getEagerSingleton() {
return EagerSingleton.eagerSingleton; }
}
class LazySingleton { private static LazySingleton lazySingleton = null; private LazySingleton() {
} public LazySingleton getLazySingleton() { if (lazySingleton == null) { lazySingleton = new LazySingleton(); } return lazySingleton; }
}
class Singleton{
public static final Singleton SINGLETON = new Singleton();
private Singleton(){}
}
|