Which of the following statements about generics is true?Question 3Answera.Generics are only applicable to classes, not methods.b.Generics allow you to write type-safe code.c.Generics are optional in Java programming.d.Generics are limited to a single data type.
Question
Which of the following statements about generics is true?Question 3Answera.Generics are only applicable to classes, not methods.b.Generics allow you to write type-safe code.c.Generics are optional in Java programming.d.Generics are limited to a single data type.
Solution
The correct statement about generics is: "Generics allow you to write type-safe code."
Here's why:
a. Generics are not only applicable to classes, but also to methods. You can have a method that accepts a generic parameter.
b. Generics do allow you to write type-safe code. This is one of the main advantages of using generics. They provide compile-time type checking and eliminate the risk of ClassCastException that was common while working with collections before generics were introduced.
c. Generics are optional in Java programming, but it's considered good practice to use them for the reasons mentioned above.
d. Generics are not limited to a single data type. You can have a class or method that works with multiple generic types.
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