hutool 单例工具

publicclassSingletonDemo {
/*** 动物接口* @author loolly**/publicstaticinterfaceAnimal{
publicvoidsay();
    }
/*** 狗实现* @author loolly**/publicstaticclassDogimplementsAnimal{
@Overridepublicvoidsay() {
System.out.println("汪汪");
        }
    }
/*** 猫实现* @author loolly**/publicstaticclassCatimplementsAnimal{
@Overridepublicvoidsay() {
System.out.println("喵喵");
        }
    }
publicstaticvoidmain(String[] args) {
Animaldog=Singleton.get(Dog.class);
Animalcat=Singleton.get(Cat.class);
System.out.println(dog==Singleton.get(Dog.class));        //TrueSystem.out.println(cat==Singleton.get(Cat.class));        //Truedog.say();        //汪汪cat.say();        //喵喵    }
}