Create object class name Object name in Java =new class name (); What do you mean by () back?

Class Name Object name =new class name ();
Class Name Object name  This explanation is to create a class name class reference variable named "Object name"
New;  The explanation for this is the instantiation of the object
The explanation of the class name ()  is the method of constructing without parameters;
The new class name (), which means that the object is instantiated with a parameterless construction method;
Class Name Object name =new class name (); The interpretation of a pointer is to instantiate an object with a parameterless construction method and assign the object's memory reference to the object name reference variable of the class name class

Create object class name Object name in Java =new class name (); What do you mean by () back?