To use constructors:
First you need to declare some imports in your servlet (see unit.jsp)
The class that you want to call constructors on needs to be registered as a callable reference and have its class registered:
JSONRPCBridge.registerCallableReference(org.jabsorb.test.ConstructorTest.class);
JSONRPCBridge.registerClass("ConstructorTest",org.jabsorb.test.ConstructorTest.class);
With this done, you call constructors so:
var constructorTest = jsonrpc.createObject("ConstructorTest",[arg1, arg2, arg3])
constructorTest.someMethod()
Note the first argument to createObject() "ConstructorTest" must be the same as the first argument to registerClass()
And that is it! You can now call constructors to your hearts content!