ArrayList

[dreamy lichen]

What is the difference between:

ArrayList<String> nameList = new ArrayList<String>();

and

ArrayList<String> nameList = new ArrayList<>();

[glass idol]

<@&987246964494204979> please have a look, thanks.

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TJ-Bot

What is the difference between: ```java ArrayList<String> nameList = new ArrayList<String>(); ``` and ```java ArrayList<String> nameList = new ArrayList<>(); ```

Both of these statements declare an ArrayList called nameList that can only hold String objects. The difference between them lies in Java's version and type inference capabilities.

In the first statement, ```java
ArrayList<String> nameList = new ArrayList<String>();

you are explicitly specifying the type of the ArrayList using `<String>`. This is required in versions of Java prior to Java 7, where you would have to repeat the type inside the angle brackets for both sides of the assignment.

In the second statement, ```java
ArrayList<String> nameList = new ArrayList<>();

you are using type inference introduced in Java 7. You don't need to repeat the type inside the angle brackets after new ArrayList<>();, as it can infer it from the left-hand side of the assignment. This makes your code more concise and less error-prone.

In summary, both statements are functionally equivalent, but using ArrayList<String> nameList = new ArrayList<>(); takes advantage of Java's type inference feature introduced in Java 7, making your code cleaner and more maintainable.

- AI generated response

[dreamy lichen]

oooh