gs gs128 Java Interfaces Packages - Java Type Interface - Quiz No.1
gs gs128 Java Quiz
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Question 1: Why are generics used?
Generics make code more fast
Generics make code more optimised and readable
Generics add stability to your code by making more of your bugs detectable at compile time
Generics add stability to your code by making more of your bugs detectable at runtime
Question 4: Which of these is an correct way of defining generic class?
class name(T1, T2, …, Tn) { /* … */ }
class name<T1, T2, …, Tn> { /* … */ }
class name[T1, T2, …, Tn] { /* … */ }
class name{T1, T2, …, Tn} { /* … */ }
Question 5: Which of the following is an incorrect statement regarding the use of generics and parameterized types in Java?
Generics provide type safety by shifting more type checking responsibilities to the compiler
Generics and parameterized types eliminate the need for down casts when using Java Collections
When designing your own collections class (say, a linked list), generics and parameterized types allow you to achieve type safety with just a single class definition as opposed to defining multiple classes
All of the mentioned
Question 6: Which of the following reference types cannot be generic?
Anonymous inner class
Interface
Inner class
All of the mentioned
