In Java generics, what is the purpose of the `? extends T` wildcard?
A. It represents an unknown type
B. It allows any type to be used as a generic
C. It restricts the generic type to be a subclass or the same as `T`
D. It specifies a return type
Answer: Option C
This Question Belongs to Java Program >> Generics In Java
What is the main purpose of generics in Java?
A. To enable type-safe collections and eliminate type casting
B. To increase program execution speed
C. To simplify the syntax of Java code
D. To improve memory management
In a generic class, what does the wildcard `` represent?
A. A wildcard type
B. A specific class
C. An unknown type
D. An exception type
What is the benefit of using generics with collections in Java?
A. It allows collections to store any type of elements
B. It ensures type safety by allowing only specific types of elements
C. It reduces the size of collections
D. None of These
Join The Discussion