What does it mean for a generic parameter to be constrained? Explain the difference between explicit and implicit constraints. Describe how interface classes can be used to specify constraints in Java...

What does it mean for a generic parameter to be constrained? Explain the difference between explicit and implicit constraints. Describe how interface classes can be used to specify constraints in Java and C#. Why will C# accept int as a generic argument, but Java won’t? Under what circumstances will C++ instantiate a generic function implicitly? Why is equality testing more subtle than it first appears?