How to cast Object to boolean?
If the object is actually a Boolean instance, then just cast it:
boolean di = (Boolean) someObject;
The explicit cast will do the conversion to Boolean, and then there's the auto-unboxing to the primitive value. Or you can do that explicitly:
boolean di = ((Boolean) someObject).booleanValue();
If someObject doesn't refer to a Boolean value though, what do you want the code to do?
Assuming that yourObject.toString() returns "true" or "false", you can try
boolean b = Boolean.valueOf(yourObject.toString())