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In the above code, theTalkinterface is used to references objects in thethingsarray. Such objects can invoke only methods specified in the interface. Try it, you will see the following output Things[0]: Meow! Things[1]: This is the Voice of America! At this point, you may be asking "...
Ask a developer the following question: "What are the fundamental characteristics of object-oriented programming (OOP)?" You will hear an immediate reply saying that classes (and objects), inheritance, abstraction, encapsulation, and polymorphism are the most important characteristics of OOP. In ...
Several days ago I posted a question about generic reallocation of arrays of polymorphic elements, which was answered by Steve Lionel. But when switching to the compilation options which are actually used in our software, I found another problem. At first glance, this is not directly related ...
I found this question in a mock exam and I can't find the answer: 10. interface A { public int getValue() } 11. class B implements A { 12. public int getValue() { return 1; } 13. } 14. class C extends B { 15. // insert code here 16. } Which three code fragments, ins...
Question 1 is much like placing crime suspects at the crime scene via something the suspect has left behind (e.g., fingerprints, hair, DNA), and genotyping is a highly reliable means of answering it. The genetic profile of a piece of meat in a market of unknown provenance could be comp...
Having said all the above, these are all language implemented features. Developers cannot custom overload an operator. So answer for the question, “does Java supports operator overloading?” is “yes and no”. Java wholeheartedly supports function overloading. We can have same function name ...
When C++ was first developed, it was in the form of a code generator which converted C++ code into C code. The user would then compile the generated C code using their normal C compiler. This program was developed by AT&T and was called cfront (I think). If you could find this program...
Hi, I am running into a problem when using HQL (or Criteria API) with Hibernate 3, I've been reading some of the posts but I am not sure yet if it's possible to do what I want. The question is, given the next mapping: Code:... ...
If Option 3 (protocol with dependency injection) is preferred, what’s the best way to a)manage the transient property 2) set the correct implementation and 3) pass reference to swiftdata model? Thanks in advance for your advice! Boost Copy Ans123 question Jan...