1.every javafx. event. event object has the method.
a. getsource()
b. getactioncommand()
c. gettimestamp()
d. getwhen()
e. getkeychar()
2.the code in a thread that is different than the main/ui thread should directly manipulate user interface elements?
true
false
3.what is the factory oo design pattern?
a. a method that fills an arraylist based on a data source.
b. saving object data to files using serialization.
c. using a method to create objects without having to specify the exact class of the object to be produced.
d. using a thread to construct objects based on a timer tick.
4.objects of a subclass can be assigned to a super class reference.
true
false
5.what is the factory oo design pattern?
a. a method that fills an arraylist based on a data source.
b. saving object data to files using serialization.
c. using a method to create objects without having to specify the exact class of the object to be produced.
d. using a thread to construct objects based on a timer tick.
6.the 'this' keyword is used to resolve conflicts between method parameters and instance fields/methods of the invoked class.
true
false