I am using java library, that has overloaded methods in the class that I use.
JAVA:
void f(float[]);
void f(Object[]);
Now I call this class from jython, and I want to call the Object[] overload. The problem is that python sees my array as array of floats, and therefore calls the wrong overload methods.
JYTHON:
f([[1, 1.0])
How to force the Object[] method to be executed?
It took me considerable amount of time to find out, so I decided to post a question together with the answer.
Jython documentation tells that in order to to force a call of right overload you should cast arguments to java objects manually before the call:
from java.lang import Byte
foo(Byte(10))
However that doesn't work with java arrays.
http://www.jython.org/archive/22/userguide.html#java-arrays
It's possible to create java arrays in jython. For example the following code will create in jython java array of type int[]
from jarray import array
array(python_array, 'i')
You can create Object[] like this, and force java to call the right overload.
from jarray import array
from java.lang import Object
oa = array(python_array, Object)
f(oa)