For programming students in reporting about declaring constructors and inheritance

2. DECLARING CONSTRUCTOR
In class-based, object-oriented programming, a constructor (abbreviation: ctor) is
a special type of function called to create an object. It prepares the new object for
use, often accepting arguments that the constructor uses to set required member
variables.
A constructor resembles an instance method, but it differs from a method in that
it has no explicit return type, it is not implicitly inherited and it usually has
different rules for scope modifiers. Constructors often have the same name as the
declaring class. They have the task of initializing the object's data members and of
establishing the invariant of the class, failing if the invariant is invalid. A properly
written constructor leaves the resulting object in a valid state. Immutable
objects must be initialized in a constructor.

3. EXAMPLESSSSSSSSSSS

4. RESULTA SA PROGRAM
NGA GIATAY

6. In Java, you can call one constructor from another constructor in the same class using the this() keyword.
This is known as constructor chaining, and it allows you to reuse code in one constructor when initializing
an object using another constructor in the same class. Here's how you can call a constructor using this():
THIS CONSTRUCTOR CALL

7. In object-oriented programming, inheritance is the mechanism of basing
an object or class upon another object (prototype-based inheritance) or class (class-based
inheritance), retaining similar implementation. Also defined as deriving new classes (sub
classes) from existing ones such as super class or base class and then forming them into a
hierarchy of classes. In most class-based object-oriented languages like C++, an object
created through inheritance, a "child object", acquires all the properties and behaviors of
the "parent object", with the exception of: constructors, destructors, overloaded
operators and friend functions of the base class. Inheritance allows programmers to create
classes that are built upon existing classes,[1] to specify a new implementation while
maintaining the same behaviors (realizing an interface), to reuse code and to
independently extend original software via public classes and interfaces.
INHERITANCE IN OOP

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9. Lamat mga boss!!!