Newbie to Newbie Blog Part One

Many years ago when I first started programming I was on the Windows system. It was slow torture to compile and run programs in C++. I have since switched to using a mac and I am happy that it really seems to be easier on the mac. The native Terminal application has been able to execute python and java code quite easily.

For my new course programming with Java, I had do a new setup. Thankfully, the Oracle website had thorough instructions on how to install Java as well as guidance to the applications necessary to start writing and compiling the code. A visit to the Java tutorials website provided lots of information on which applications are available and how to start on the journey to programming in Java. https://docs.oracle.com/javase/tutorial/index.html

Java, Python and C++ are three popular object-oriented languages (OOPs). I like to think of them in this way: I think of an object is as a person. We can then have a collection of persons called humans. Humans in this case will be considered a class. As a member of the human class, each person has an age and a name property which can be different, but each person is still human.

A class by can inherited, therefore we can use the initial human class to create more human classes, and they will also have an age, and a name. Now suppose we have a class of male humans. It has inherited the properties of age and name, but now it can have a new and different property called gender.

We know that humans exist all over the world and speak different languages. With polymorphism we can say that a every time we create a human in Germany, we teach that human German and every time we create a human in China, we teach that human Chinese. We are always going to create a human with an age and name, but depending on where that human is from, they are taught a different language.

In my understanding, abstraction and encapsulation are terms used for hiding the insides of a program so you can create new items without knowing all the parts. So for instance I could say create a new German male human, and out will pop a person with a name, age, and gender who speaks German. All without knowing how the person was created.

I hope this helps make the concepts of object oriented programming a little easier to understand.


Source: Java T Point



Reference:
Java T Point. Java OOPs Concepts. Retrieved from https://www.javatpoint.com/java-oops-concepts