StackOverflow2013

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Id
6644450
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0
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0
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CreationDate
2011-07-10T23:29:58.367
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2011-07-11T00:35:23.573
LastEditDate
2011-07-11T00:35:23.573
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836941
OwnerUserId
836941
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6643648
PostTypeId
2
Score
2
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0
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text
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This is simplest version of this code with the same problem: <pre><code>import java.util.*; public class GenericTestsClean { public static void main(String[] args) { List<Animal> animalCage = new ArrayList<Animal>(); animalCage.add(new Cat()); animalCage.add(new Dog()); BigCage.printList(animalCage); } } class Animal {} class Dog extends Animal {} class Cat extends Animal {} class BigCage extends Cage { public static void printList(List list) { System.out.println("BigCage#printList"); for (Object obj : list) { System.out.println("BigCage: " + obj.getClass().toString()); } } } class Cage { public static void printList(List list) { System.out.println("Cage#printList"); for (Object obj : list) { System.out.println("Cage: " + obj.getClass().toString()); } } } </code></pre> I think that compiller should return error: <pre><code> GenericTestsClean.java:8: printList(java.util.List) in BigCage cannot be applied to (java.util.List<Animal>) BigCage.printList(animalCage); ^ 1 error </code></pre> (or sth about name clash with the same errasure) but it doesn't. After dissasembling (javap -c GenericTestsClean) we got: <pre><code>invokestatic #9; //Method BigCage.printList:(Ljava/util/List;)V </code></pre> Calling <code>java GenericTestsClean</code>: javac 1.6.0_10 version <pre><code>BigCage#printList Exception in thread "main" java.lang.ClassCastException: Cat cannot be cast to Dog at BigCage.printList(GenericTestsClean.java:19) at GenericTestsClean.main(GenericTestsClean.java:8) </code></pre> Eclipse compiller version <pre><code>BigCage#printList BigCage: class Cat BigCage: class Dog </code></pre> IMHO this results are both incorrect.
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1. POJava, Static Method Binding and Generics all rolled up with some Method Overloading
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1. USzacheusz
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1. USzacheusz
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