Exam 1z0-819 topic 1 question 166 discussion

Tested really CFI

C F and I are correct E is not correct

Tested, C F I is correct.

Tested

E is incorrect because The reference type 'Collection' is what decides which method gets called.

f1.foo(c) calls the foo() method on the f1 object, which is an instance of the Foo class. This method prints "Bonjour le monde!", so C is true.f2.foo(c) calls the foo() method on the f2 object, which is an instance of the Bar class. Since f2 is declared as a Foo object, the foo() method from the Foo class is overridden by the foo() method from the Bar class that takes a Collection argument. This method prints "Hello world!", so F is true.b1.foo(c) calls the foo() method on the b1 object, which is an instance of the Bar class. Since b1 is declared as a Bar object and the argument passed to the method is a List, the most specific version of the overloaded foo() method from the Bar class that takes a List argument is called. This method prints "Ola Mundo!", so E is true.

CDI correct

foo f1 = new foo(); => foo class has one method print hello world foo f2 = new bar(); f2 cant access overload method in bar so print ponjour bar b1 = new bar() ; b1 can access two method but we pass arrayList so print ola