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Problem with creating java anonymous class with generics in scala

Answer 1

+4 A:

Enclosing your Scala code in an object for separate compilation and correcting the order of the type parameters:

object TestI {
    val t = new Test[Boolean,Int]() {
        def get(t: Boolean) = 0
    }
}

... I do not get any compilation errors.

Randall Schulz 2010-09-21 17:16:49

I tried this and get the same error. I use maven for compilation with scala compile plugin with version 2.6.1 and scala 2.8

Alexander Kuznetsov 2010-09-21 17:21:32

I suspect either your Java interface is not in the same package as your Scala class, you failed to import that interface, Maven isn't compiling the Java first, the Java-generated `.class` files aren't in the class-path during Scala compilation or some combination thereof.

Randall Schulz 2010-09-21 17:34:21

This is not a problem becouse the following code works fine val t = new Test() { def get(t: Any) = null } That is you version of scala?

Alexander Kuznetsov 2010-09-21 19:02:58

I should have noticed that your diagnostic was not about an undefined `Test`, but rather about a `Test` that was being used in a manner not consistent with its definition.

Randall Schulz 2010-09-21 20:36:23

Answer 2

+1 A:

It was old version of scala 2.6.1. It was installed by default from maven archity for scala projects. Now I upgraded version to 2.8.0 and problem was solved. For old version your need to scpecify the version of java.

Alexander Kuznetsov 2010-09-21 19:39:17

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Problem with creating java anonymous class with generics in scala

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