What is a non-primitive data type in Java?
What is a non-primitive data type in Java?
In Java programming language, primitive data types refer to the built-in data types that are used to store simple values such as numbers, characters, and Booleans. These data types include:
On the other hand, non-primitive data types in Java are referred to as reference data types or objects. These are more complex data structures that can be used to represent a wide range of real-world concepts such as people, places, things, and relationships.
Some examples of non-primitive data types in Java include:
Strings: A sequence of characters enclosed in double quotes, often used for representing text. Arrays: A collection of elements of the same data type stored in contiguous memory locations. Objects: Complex data structures that are instances of classes and have properties and behaviors. Collections (such as Lists, Sets, Maps): Groups of objects that can be manipulated and traversed. Classes: Custom data types that can be used to represent complex concepts.Non-primitive data types in Java are reference types because they are stored on the heap rather than the stack. When you create an instance of a non-primitive data type, such as a String or an Object, it is placed on the heap and a reference to it is returned. This allows multiple parts of your program to access the same data structure without having to copy it.
Here are some key characteristics of non-primitive data types in Java:
Reference: Non-primitive data types are stored on the heap rather than the stack, which means they are referenced by a pointer. Complex: Non-primitive data types can be complex structures that contain multiple components or relationships. Instantiatable: You can create instances of non-primitive data types using constructors or factories. Inheritable: Non-primitive data types can inherit behavior and properties from parent classes. Overridable: Methods of non-primitive data types can be overridden to provide custom implementations.In summary, non-primitive data types in Java are complex structures that are stored on the heap and can be used to represent a wide range of real-world concepts. They are reference types that are instantiatable, inheritable, and overridable, which makes them powerful tools for building robust and maintainable software systems.
Which of the following is non primitive type in JavaScript data type?
I'm happy to respond in English for you today!
In JavaScript, a "primitive" refers to one of the basic built-in data types that are not objects or arrays. The seven primitive types in JavaScript are:
Number: This is a numeric value, which can be either an integer (e.g., 42) or a decimal (e.g., 3.14). String: This is a sequence of characters, which can include letters, numbers, and special characters. Boolean: This is a logical value that can have one of two states: true or false. Null: This represents the intentional absence of any object value. Undefined: This represents an uninitialized variable (i.e., one that hasn't been assigned a value). Symbol: This is a unique and immutable identifier, introduced in ECMAScript 2015. BigInt: This is a large integer value, which can be either a signed or unsigned integer.So, what's not primitive? Well, the answer is: all non-primitive data types are objects, including:
Arrays (like["hello", "world"]) Objects (like { name: "John" }) Functions (like function sayHello() { console.log("Hi!"); }) Dates and Times Regular Expressions
These non-primitive data types are created using constructors or functions, such as the Array() constructor or the Object.create() method. In contrast, primitive values are created directly by assigning a value to a variable.
Here's a summary:
Primitive Types:
Number String Boolean Null Undefined Symbol BigIntNon-Primitive Types (Objects):
Arrays Objects Functions Dates and Times Regular ExpressionsI hope this clarifies the distinction between primitive types and non-primitive types in JavaScript!
