在Scala / Java中使用`getClass`方法？

Question

I find this works well (Scala codes)

class myClass(i:Int) {

}

val a = new myClass(1)

But this doesn't work:

val b = a.getClass
val c = new b(1)

The compiler will say cannot resolve "b".

Does anyone have ideas about this? What are the difference between b and myClass here? Does this mean myClass is not an object, while b is an object?

Answer 1

myClass is a type . b is a value (or term ) of type java.lang.Class . new requires the former kind.

Answer 2

new expects a class name in the source code. The compiler will not try to read b as an expression that somehow resolves to a class name.

What you seem to be trying to do is reflection: Using an object to describe the class (your b ) at runtime and getting an instance from that.