What’s the difference between Java array length vs length ()? When you put round brackets at the end of a word in Java, it indicates that you are calling a method. Without round brackets, you are ...

Programmers frequently need to sort elements from a database into a collection, array, or map. In Java, we can implement whatever sorting algorithm we want with any type.

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[].