Syntax for 'new' in java

This question already has an answer here:

Java inner class and static nested class 23 answers

---

It's calling the constructor of Kb . It's easier to show this in three statements:

K.Ka.Kb x1 = new K.Ka.Kb();
K.Ka.Kb.Kc x2 = x1.new Kc(); // Pass x1 as the hidden constructor arg
K.Ka.Kb.Kd.Kd k = x2.new Kd(); // Pass x2 as the hidden constructor arg

---

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.

---

Kb() is the default constructor for class Kb . It is what relates to the first new of the line:

you are creating a new instance of Kb (class K.Ka.Kb actually ; depending on the context you may omit K.Ka. )

on which you are calling new Kc() for creating a new instance of Kc

on which you are calling new Kd() for creating a new instance of Kd

链接地址: http://www.djcxy.com/p/92010.html

上一篇: 使用静态内部类

下一篇: java中'new'的语法