What is an anonymous inner class and how to use it

1. An anonymous inner class is a definition of a class , At the same time, it is also an object , It has the characteristics of defining classes , There are also features of creating objects

class outer05{
    
    private int n1=100;
    public void f2(){
    
        // Anonymous inner class based on class 
        person person = new person(){
    
            @Override
            public void hi() {
    
                System.out.println(" Rewrote hi Method ");
            }
        };
        person.hi();// Dynamic binding   The real type of operation is outer05$1
        new person(){
    
            @Override
            public void say1(String name) {
    
                super.say1(name);
            }
        }.say1("jack");/* You can do this without creating an object .say()*/
    }
}
class person{
    
    public void hi(){
    
    }
    public void say1(String name){
    
        System.out.println("haha"+name);
    }
}

2. You can directly access all members of an external class , Including private
3. Cannot add access modifier , Because its status is a local variable
4. Scope ： Just defining its methods or code blocks
5. Anonymous inner class – visit –> External class members
6. External other classes – Cannot access –> Anonymous inner class
7. If the members of the outer class and the inner class have the same name , Internal class access , By default, follow the principle of proximity , If you want to access members of an external class , You can use ( External class name .this. member ) To visit

This article explains very clearly
https://blog.csdn.net/a850661962/article/details/109642780