I see a few issues.
1) Where is your setter method for that property.
2) You are casting the getBean return value to a String, when the Bean type is not a String but a com.abc.testing.xyz.bear.zoo.SomeClass
3) What is this init method? What is the purpose of the object that is the bean is also the code to lookup itself from the ApplicationContext?
I am assuming this is just a
test for you to try out Spring.
I recommend making the simple SomeClass with the String property and getter and setter of it.
Then create another class that has a public static void main(String[] args) and in that method create the ApplicationContext and get the Bean.
Also, make sure your testing.xml is in the root of your classpath.
Good Luck
Mark