bounded-wildcard
Mockito: Stubbing Methods That Return Type With Bounded Wild-Cards
Consider this code: public class DummyClass { public List<? extends Number> dummyMethod() { return new ArrayList<Integer>();[详细]
2023-04-04 00:50 分类:问答Why can't you have multiple interfaces in a bounded wildcard generic?
I know there\'s all sorts of counter-intuitive properties of Java\'s generic types. Here\'s one in particular that I don\'t understand, and which I\'m hoping someone can explain to me. When specifying[详细]
2023-03-19 01:02 分类:问答Compiler errors with java bounded wildcard generics
Having the below code: Stack<Integer> integers = new Stack<Integer>(); Stack<? extends Number> numbers = integers;[详细]
2023-03-15 03:35 分类:问答Java generics and bounded types
I have a wrapper class for ConcurrentMap like the following: public MapWrapper<K, V> implements ConcurrentMap<K, V> {[详细]
2023-03-10 05:07 分类:问答Java Generic Collection of Generic Type with Bounded Wildcard
Please help me with this: If Lion IS-A Animal and given Cage<T>: Cage<? extends Animal> c = new Cage<Lion>(); // ok,[详细]
2022-12-30 20:48 分类:问答Is it possible to write a generic +1 method for numeric box types in Java?
This is NOT homework. Part 1 Is it possible to write a generic method, something like this: <T extends Number> T plusOne(T num) {[详细]
2022-12-30 12:18 分类:问答Combining bounded wildcards in Java
Is there anyway to use a bounded wildcard require a class implement more than one interface? In otherwords, something like...[详细]
2022-12-21 16:54 分类:问答Why is passing a subclass to a bounded wildcard only allowed in certain places?
This following is from generics tutorials: Say class R extends S, public void addR(List<? extends S> s) {[详细]
2022-12-13 09:41 分类:问答What is the difference between bounded wildcard and type parameters?
Is there a difference between <N extends Number> Col开发者_Python百科lection<N> getThatCollection(Class<N> type)[详细]
2022-12-12 05:47 分类:问答generics error: not applicable for the arguments
Can someone explain to me why the following code does not work? public class Test { interface Strategy<T> {[详细]
2022-12-10 11:01 分类:问答