type can hold/assume any object of its sub

Object-Oriented Programming (Please do not use AI) Create a Java program that has the following: Inheritance -  Create a superclass and one or more subclasses that inherit properties and methods from the superclass.  Polymorphism - Show polymorphism by using method overriding and method overloading.  Provide an example of runtime polymorphism by creating objects of the subclasses and calling overridden methods. Encapsulation -  Demonstrate the concept of encapsulation by applying access modifiers (private, protected, public) appropriately in your program. Abstraction - Utilize abstract classes and methods in your program to illustrate abstraction.  Show examples of the following  words: super, this, static, final

True or false?(a) Every object is an instance of the object class.(b) If a class does not extend a superclass explicitly, it extends object by default.

How can class fields be protected against unintended alteration is the question.