What is non primitive data types in Java?

Answer 1

"Primitive" data types are integers (char, int, long), floats (float, double) and void. Void is never used for variables, but tells C that a function accepts and/or returns no arguments.

"Non-primitive" data types include arrays, structs and classes. These utilize primitive data types and are called, in general, structured data types.

Data types can become more complicated as you mix the structured data types. For instance, arrays, structs and classes can contain arrays, structs and classes, nested as deep as you wish.

Depending upon who asks the question, a non-primitive data structure may be just a structured type (array, struct, class), or a structured type containing structured types.

Answer 2

When classifying data types we usually begin by referring to a language's fundamental types. In C++, for instance, we have the following fundamental types:

• A Boolean type (bool)
• Character types (such as char and wchar_t)
• Integer types (such as int and long long)
• Floating point types (such as double and long double)
• A type to signify the absence of information (void)

A user can also construct other types using declarator operators:

• Pointer types (such as int* and std::string*)
• Array types (such as char[] and std::stack[])
• Reference types (such as double& and std::vector&&)

In addition, a user can define their own types:

• Data structures, classes and unions (such as std::vector and std::string)
• Enumeration types for representing sets of values (enum and enum class types)

The Boolean, character and integer types are collectively called integral types. The integral and floating point types are collectively known as arithmetic types. Enumerations, classes, data structures and unions are collectively known as user-defined types because they must be defined by users rather than being available for use without previous declaration, the way fundamental types are. In contrast, fundamental types, pointers and references are collectively referred to as built-in types.

The integral and floating point types are provided in a variety of sizes to give programmers a choice of the amount of storage consumed, the precision, and the range available for computations. The assumption is that a computer provides bytes for holding characters, words for holding and computing integer values, some entity most suitable for floating point computation, and addresses for referring to these entities. The C++ fundamental types together with pointers and arrays present these machine-level notions to the programmer in a reasonably implementation-independent manner.

In contrast, user-defined types present high level abstractions which are not supported natively by the machine; the user must provide all code necessary to correctly handle these entities.

We often use the term primitive data type when referring to a data type used as the building block for a more complex, user-defined type. The primitive data type need not be a built-in type as there are many well-established user-defined types that can also be regarded as being primitive data structures, particularly those defined by the C++ standard template library (such as std::string, std::vector and std::list).

Answer 3

A primitive variable can be one of eight types: char, boolean, byte, short, int, long, double, or float. Once a primitive has been declared, its primitive type can never change, although in most cases its value can change. they are used to store values like name, age, salary etc.

Anything that is not primitive is a "non primitive" data type.

Answer 4

arrays is the non primitive data structure

Answer 5

User-defined types are non-primitive types.

Answer 6

That refers mainly to objects. This includes items that are internally stored as objects, even if you don't use the "new" operator - such as arrays and Strings.