Java4android (function of the static keyword)

syntax characteristics of static member variables (static String name)

Can be invoked either with a class or by an object.

Static member variables are not variable at the object level, but are class-level. All objects produced by this class are using this static member variable.

syntax characteristics of static functions ( static void Talk () )

Can be called either directly from a class or by using an object to invoke the

non-static member variables cannot be referenced in a static function

syntax characteristics of static code blocks ( static {code} )

　　　No Name,

Static code blocks are called when the class is loaded, and the main function is to assign initial values to some static variables.