Types of Java variables, defining variables

Common data types in Java

Data type	Data type Interpretation	Description
Char	Character type	Used to store a single character, such as: Gender "male", "female", Electric Light "on", "off"
Int	Plastic	Used to store integers, such as the time of day is 24 hours, January is 31 days
Double	Double precision	For storing small trees, such as Mengniu breakfast milk price is 1.3 yuan, mobile phone standby time is 6.5 hours
String	String	Used to store a string of characters, such as "My hobby is playing football", "I Like Java program"

Defining variables

 Public classtest{ Public Static voidMain (string[] args) {CharA = ' P ';//A variable that declares and assigns a character shape (a single character)        intNumber = 123;//variables that declare and assign values to reshape        Doubleb = 1.5;//variables that declare and assign double-precision shapesString d = "Zifuchuan";//a variable that declares and assigns a string type//OutputSystem.out.println (a);        SYSTEM.OUT.PRINTLN (number);        System.out.println (b);    System.out.println (d); }}

Types of Java variables, defining variables