Java Generics Best Practices

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To make the most of Java generics and ensure effective usage, consider the following best practices:

Optional Best Practices

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Be explicit

Provide explicit type parameters whenever possible to enhance code readability and maintainability. Avoid relying on raw types or the compiler’s type inference alone.

Generic Class with Explicit Type Parameter

Let’s create a generic class called Box that can hold any type of object. By providing an explicit type parameter, we make it clear what type the Box will contain.

public class Box<T> {
    private T content;

    public Box(T content) {
        this.content = content;
    }

    public T getContent() {
        return content;
    }
}

// Usage of the generic class with explicit type parameter
Box<String> stringBox = new Box<>("Hello, World!");
Box<Integer> integerBox = new Box<>(42);