Differences and connections between final and static

Can modify the class 、 Method 、 Member variables .

static Can modify the code block of the class ,final Can not be .static The decorated code block represents a static code block , When Java virtual machine （JVM） When loading a class , Will execute the code block , Will only be executed once

static You cannot modify a local variable in a method ,final Sure .

static Decorated to indicate static or global , The decorated properties and methods belong to the class , You can use the class name . Static attribute / Method name visit
static Decorated attributes , That is, class variables , It is created and initialized when the class is loaded , It will only be created once
static Modified variables can be reassigned ,static Modified variables if modified , The values of all used object instances have been modified

static You can't use this and super keyword
static Method must be implemented , It can't be abstract abstract
static Method can only be static Methods cover

final Modifier represents constant 、 Once created, it cannot be changed
final The member variable of the tag must be assigned at the same time as the declaration , Or in the constructor of this class , You can't reassign
final Method cannot be overridden by subclass
final Class cannot be inherited , No subclasses ,final The default method in the class is final Of
final Can't be used to decorate a constructor

final  Prevent instruction reordering Ensure visibility between threads （ Concurrent ）
private Method of type defaults to final Type of