¡@

Home 

java Programming Glossary: animal

At runtime, find all classes in a Java application that extend a base class

http://stackoverflow.com/questions/205573/at-runtime-find-all-classes-in-a-java-application-that-extend-a-base-class

extend a base class I want to do something like this List Animal animals new ArrayList Animal for Class c list_of_all_classes_available_to_my_app.. do something like this List Animal animals new ArrayList Animal for Class c list_of_all_classes_available_to_my_app if c is.. universe and when I find one that descends from Animal I want to create a new object of that type and add it to the..

Is List<Dog> a subclass of List<Animal>? Why aren't Java's generics implicitly polymorphic?

http://stackoverflow.com/questions/2745265/is-listdog-a-subclass-of-listanimal-why-arent-javas-generics-implicitly-p

List Dog a subclass of List Animal Why aren't Java's generics implicitly polymorphic I'm a bit.. inheritance polymorphism. Assume the following hierarchy Animal Parent Dog Cat Children So suppose I have a method doSomething.. Cat Children So suppose I have a method doSomething List Animal animals . By all the rules of inheritance and polymorphism I..

When “” == s is false but “”.equals( s ) is true

http://stackoverflow.com/questions/1111296/when-s-is-false-but-equals-s-is-true

lately Or why do I feel the need to add some funny animal pictures here java comparison equals equality share improve..

generics, method signatures, assignments

http://stackoverflow.com/questions/2292308/generics-method-signatures-assignments

Effective Java 2nd Ed. AFAIR is we have containers for animals Container Animal and as subclasses of Animal we have Lion and.. and Butterfly . Now if you have a method void func Animal animal it will accept both lions and butterflies. However this function.. However this function void func Container Animal animalContainer will not accept a Container Lion neither a Container..

Any simple way to explain why I cannot do List<Animal> animals = new ArrayList<Dog>()? [duplicate]

http://stackoverflow.com/questions/2346763/any-simple-way-to-explain-why-i-cannot-do-listanimal-animals-new-arraylistd

simple way to explain why I cannot do List Animal animals new ArrayList Dog duplicate This question already has an answer.. possible. You can explain this to a layman easily Animal animal new Dog . A dog is a kind of animal but a list of dogs is not.. a layman easily Animal animal new Dog . A dog is a kind of animal but a list of dogs is not a list of animals. java generics..

Is List<Dog> a subclass of List<Animal>? Why aren't Java's generics implicitly polymorphic?

http://stackoverflow.com/questions/2745265/is-listdog-a-subclass-of-listanimal-why-arent-javas-generics-implicitly-p

So suppose I have a method doSomething List Animal animals . By all the rules of inheritance and polymorphism I would.. subset of Animal by saying doSomething List extends Animal animals . I understand that this is Java's behavior. My question is.. what you can do with a List Animal you can add any animal to it... including a cat. Now can you logically add a cat to..

Difference between “this” and“super” keywords in Java

http://stackoverflow.com/questions/4023344/difference-between-this-andsuper-keywords-in-java

this situation class Animal void eat System.out.println animal eat class Dog extends Animal void eat System.out.println dog.. d new Dog d.eat d.anotherEat The output is going to be animal eat dog eat animal eat The third line is printing animal eat.. d.anotherEat The output is going to be animal eat dog eat animal eat The third line is printing animal eat because we are calling..

How do I make the method return type generic?

http://stackoverflow.com/questions/450807/how-do-i-make-the-method-return-type-generic

String Animal public void addFriend String name Animal animal friends.put name animal public Animal callFriend String name.. void addFriend String name Animal animal friends.put name animal public Animal callFriend String name return friends.get name..

explicit casting from super class to subclass

http://stackoverflow.com/questions/4862960/explicit-casting-from-super-class-to-subclass

Animal public void eat public void main String args Animal animal new Animal Dog dog Dog animal this code generates no compilation.. void main String args Animal animal new Animal Dog dog Dog animal this code generates no compilation error Dog dog Dog animal.. this code generates no compilation error Dog dog Dog animal ...why compiler can't detect these error ..is this the drawback..

Polymorphism with gson [closed]

http://stackoverflow.com/questions/5800433/polymorphism-with-gson

class Test public static void main String args IAnimal animals new IAnimal new Cat Kitty new Dog Brutus 5 Gson gsonExt null.. new IAnimalAdapter gsonExt builder.create for IAnimal animal animals String animalJson gsonExt.toJson animal IAnimal.class.. IAnimalAdapter gsonExt builder.create for IAnimal animal animals String animalJson gsonExt.toJson animal IAnimal.class System.out.println..