Generally speaking, we can say that array types are covariant in Java. We’ll look at examples of covariance ... class Generic<T> { T data; void write(T data) { this.data = data; ...

Introduced in Java 5, generics enhance the type safety of your code and make it easier to read. This helps you avoid runtime errors like the ClassCastException, which happens when you try to cast ...

Even the most complicated classes in Java can be flattened down to nothing more than the set of primitive data types they represent. But primitive types aren’t objects, and that presents a problem.