Array types in Java are not implicitly contravariant ... class Generic<T> { T data; void write(T data) { this.data = data; } // T is input parameter type T read() { return data; ...

which can operate on various data types while maintaining compile-time type checking. In previous articles, I’ve introduced the essentials of generics programming in Java and advanced techniques ...

Type inference in Java happens when the JDK’s compiler, rather than the developer, assigns a data-type to a variable. As you can see in the following var examples, the left-hand side of the assignment ...