When you create a new instance and the class constructor is called, enough memory is being reserved in the heap for that instance's attributes to be stored. Those attributes comprise both:
- Attributes directly belonging to your class definition;
- Attributes belonging to all upper nodes in your class hierarchy tree.
Yes, the superclass constructor is called, but with the sole purpose to initialize attributes of the superclass. It never means a new object of the superclass will be created.
Check these links, they may help you to understand the process:
On the second link, documentation states: It is new which creates the object. That is: It reserves memory for all the class references (Object attributes) and primitive values.
Then, the constructor is called, and its aim is to initialize enclosing class' attributes.
Since the object attributes are references in Java, the constructor may use new to create object attributes, their references will be the values stored in your object's memory.
The superclass constructor just continues this task for your class inherited attributes.
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