Java data type,

Java data type,

I. Common Java Data Types

Data Type	Description	Example
Int	Integer	Used to store integers, such as the number of students, employee numbers of a company, days of a year, and hours of a day. (four bytes, incompatible)
Double	Dual-precision floating point	It is used to store decimal numbers, such as the price of commodities, the amount of loans the World Bank has made to other countries (regions), and the wages of employees. (eight bytes, compatible)
Char	Character Type	It is used to store a single character, such as gender 'male' or 'female '. The score is "excellent" or "good ".
String	String type	Stores a string of characters, such as employee name, product model, and product introduction information.