In Java, some array types are covariant and/or contravariant. In the case of covariance, this means that if T is compatible to U, then T[] is also compatible to U[].

Learn about the new Java 10 "var" type, and experiment using JShell with this hands-on tutorial on how to reduce boilerplate code using new type inference for local variables.

This can happen because varargs arguments are implemented as an array, and arrays in Java don’t have the same type-specificity as generics. For instance, consider this method: ...

Java arrays - a brief tutorial In Java an array is a way of storing multiple items of the same type. In this quick tutorial we introduce you to the very basics.