How do I use type annotations in Java?

How do I use type annotations in Java?

Type annotations in Java are used to provide additional information about the types in your code. They can help with type checking and improve code readability.

Can you give me an example of type annotations?

Sure! For instance, you can use @NonNull to indicate that a variable should not be null. Here's a simple example:

public void setName(@NonNull String name) {
    this.name = name;
}

Are there any specific libraries for type annotations?

Yes, libraries like Checker Framework and Lombok provide additional type annotations that can enhance your Java code.

How do type annotations affect performance?

Type annotations themselves do not affect runtime performance, but they can help catch errors at compile time, leading to more efficient code.