• Member xx corresponds to class xx. For example, member variables and class variables are non-statically modified and statically modified in a class.

• Constants can be divided into member constants and class constants, just check whether there is static modification

There is a definition of final Variables in the Java language specification, and onlyfinal修饰的变量应该就叫做final变量is used in examples.

static和finalIt is called a constant if it is modified at the same time.
The Java specification is defined as follows

static variables that are final and that are initialized with compile-time constant values are initialized first. This also applies to such fields in interfaces (§9.3.1). These variables are "constants"