What is array in Java?

The Array class is the base class for language implementations that support arrays. However, only the system and compilers can derive explicitly from the Array class. Users should employ the array constructs provided by the language. An element is a value in an Array. The length of an Array is the total number of elements it can contain.

What is a system array?

The type System.Array is the abstract base type of all array types. An implicit reference conversion (§10.2.8) exists from any array type to System.Array and to any interface type implemented by System.Array. An explicit reference conversion (§10.3.5) exists from System.Array and any interface type implemented by System.Array to any array type.

What is an array in C#?

An array in C# is a region of memory that stores a certain number of elements—each element has the same type. Arrays are harder to use than Lists, but can be more efficient. Arrays are inside many things—in this sense, they are a foundation that we use to build more complex types. Sometimes they are required as arguments, or returned from methods.