I have a class that looks like this:
class Dao<T>{ ... } I want to do this:
new Dao<Student>(); from the Spring XML configuration.
Can that be done? How?
I have a class that looks like this: class Dao<T>{ … } I want
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I have a class that looks like this:
class Dao<T>{ ... } I want to do this:
new Dao<Student>(); from the Spring XML configuration.
Can that be done? How?
Reading up about type erasure should help you understand this a bit better.
At runtime, the type parameters for a generic class are erased. Meaning, as cletus said, generics in Java are basically syntactic sugar – they are only a compile-time feature.
Since Spring is instantiate objects at run-time, it is actually free to instantiate a
Daoof any type – and actually, there is nothing stopping it from creating aDaoand passing inStudenttypes in some methods andTeachertypes in another.So basically the answer is, Spring has no idea that the
Daotype is meant to be parameterized and can’t do anything with it.