Knowee
Questions
Features
Study Tools

Yo, why is it that when it comes to generics in Lists, the naming convention is List<E> instead of List<T>

Question

Yo, why is it that when it comes to generics in Lists, the naming convention is List<E> instead of List<T>?

🧐 Not the exact question you are looking for?Go ask a question

Solution

Sure, I can explain that. The naming convention for generics in Java, such as List<E>, is just a convention. The letter 'E' is used because it stands for "Element" which makes sense in the context of collections where we are often dealing with single elements at a time.

However, you could use almost any letter you like. 'T' is also commonly used and it stands for "Type". So List<T> is also correct and you might see it used in some code. The important thing is that the same letter is used consistently within a given method or class.

Here's a step by step breakdown:

  1. In Java, when defining a generic class or method, we use angle brackets (< and >).
  2. Inside these brackets, we put a single uppercase letter. This letter is a placeholder for whatever type we will use the class or method with.
  3. The convention is to use 'E' for collections (like List<E>) because 'E' stands for "Element".
  4. However, 'T' (for "Type") is also commonly used. Other letters like 'K' for Key, 'V' for Value, 'N' for Number can also be used.
  5. The important thing is to be consistent. If you start with 'E', don't switch to 'T' halfway through your code.

I hope this helps! Let me know if you have any other questions.

This problem has been solved

Similar Questions

Which symbol is used to denote a generic type in Java? Which of the following statements is true about this method? a. * b. & c. # d. <>

Which of the following is a generic interface in the Java Collection Framework?Question 3Answera.Listb.Setc.Mapd.Iterable

What is the syntax for defining a generic class in Java?Select one:a. class <MyGen>[<T>]b. class MyGen<T>c. class <MyGen>(T)d. class <MyGen>

In Java generics, what does the '?' symbol represent?Question 2Answera.Any typeb.Object typec.Generic typed.Wildcard type

Which keyword is used to declare a generic method's type parameter in Java?Question 5Answera.classb.genericc.template

1/1

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.