Syntax for 'new' in java [duplicate]

Question

Constructors of non static member classes take an extra hidden parameter which is a reference to an instance of the immediately enclosing class. There is also a syntactic extension of 'new'.

In the below code,

class K{
    static class Ka{
        static class Kb{
            class Kc{
                class Kd{

                }
            }
        }
    }
}

class Test{
    K.Ka.Kb.Kc.Kd k = new K.Ka.Kb().new Kc().new Kd();
}

Can you please help me understand the meaning of Kb() in K.Ka.Kb().new Kc().new Kd()? I understand that new Kc() is required as told in first paragraph.

Answer 1

The parentheses you point out actually do not apply to Kb but K.Ka.Kb.

new K.Ka.Kb()

is creating a new instance of the K.Ka.Kb nested class.