Java Note Native data type "two"

1. Data types in Java are divided into:1) native type (primitive Data type)2.) Reference type (object type) (Reference type)1. Variables and constants: constants: The amount of value that does not change; variable: the value can change;3If a variable is defined: variable-type variable name;intA;4. Assignment of variables: a= 2, 3 and 4 are separated, of course, can be combined to express;intA = 2; Such representations and 3,4 are equivalent;intA = 2; intA; a= 2;5. One "=" and "two" = ="The difference between one"="indicates that the assignment is not equal to two"=="represents an equal6variable Name Description: In Java, the variable name is underlined, the letter, the $ symbol switch, and follows the underscore, letter, $, and number. In short, you cannot start with a number in Java;

Java Note Native data type "two"