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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.
583
The new operator is used in Java to create new objects. It can also be used to create an array object. Let us first see the steps when creating an object from a class − Declaration − A variable declaration with a variable name with an object type. Instantiation − The 'new' keyword is used to create the object.
Object cloning refers to the creation of an exact copy of an object. It creates a new instance of the class of the current object and initializes all its fields with exactly the contents of the corresponding fields of this object. Using Assignment Operator to create a copy of the reference variable.
The clone() method of the class java. lang. Object accepts an object as a parameter, creates and returns a copy of it.
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.
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