what is type in java

What is a type in java

The type mentioned in the java programming language usually refers to the data type , Java language provides eight basic types. Six numeric types (four integers, two floating point types), a character type, and a Boolean type. At the same time, Java also has reference types (objects, arrays, etc.). Recommended: "Java Tutorial"

The definition of data type in the data structure is a group of the same properties The collective name of a collection of values ​​and a set of operations defined on this collection of values; variables are used to store values, and they have names and data types. The data type of a variable determines how the bits representing those values ​​are stored in the computer's memory.

Java data type classification:

##Built-in data types

byteshort intlongfloatdoublebooleanchar

##Reference type

Reference type variables are created by the constructor of the class, and you can use them to access the referenced object. These variables are specified as a specific type when declared, such as Employee, Pubby, etc. Once a variable is declared, its type cannot be changed.

Objects and arrays are reference data types.

The default value of all reference types is null.

A reference variable can be used to reference any type that is compatible with it.

Example: Animal animal = new Animal("giraffe").

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