在Jython中创建Java对象时，没有可见的类构造函数

Question

I am running the Jython shell. I was trying to mess around with a few Java classes in the shell, as I am a bit new to using the Jython implementation. However, when I try to create an object, for example, I get the following Traceback.

>>> s = java.lang.annotation
>>> s.Annotation()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: No visible constructors for class (java.lang.annotation.Annotation)

I read this question and tried editing the python.security.respectJavaAccessibility line in my Jython registry to equal false , but that was to no avail.

What could be causing this to happen?

Answer 1

Annotation is not a class, its an interface [ Documentation ] . You cannot instantiate an interface , you will have to create a class that implements the Annotation class and instantiate that class.