Java Object Oriented Exercises

3153391

Hi guys, I wonder if you can help.

As I've started as a programmer, I've been told I have to practice OO a bit more. I've done the theory, but I think I will have to take another look at it. , Above all though, I have to do exercises.

What I'm looking for is for suggestions: things I have to practice are:

-Inheritance

-Interfaces

-Polymorphism

-And in general anything to do with OO.

Ideally I don't really need to do any complicated exercise, even simple scenarios would do as long as I can put into practice the theory, printing some user input strings might be enough as long as I can implement 00 principles, so things like, an emplyoee hierarchy or something along these lines.

Also I know Im a bit weak when it comes to linking different classes together, and things like composition.

So, can anybody suggest simple situation/s I could use to practice?

I have installed the Spring Tool Suite but if I'm not mistaken I can use it to create ordinary java projects.

Any idea?

Unknown

3153391 wrote:

As I've started as a programmer, I've been told I have to practice OO a bit more. I've done the theory, but I think I will have to take another look at it. , Above all though, I have to do exercises.
What I'm looking for is for suggestions: things I have to practice are:
-Inheritance
-Interfaces
-Polymorphism
-And in general anything to do with OO.

I suggest you just work your way through The Java Tutorials. There are trails for all of the basic functionality. This link is to the lesson on Interfaces and Inheritance.

https://docs.oracle.com/javase/tutorial/java/IandI/index.html

As you can tell from the content list at the left it has trails for interfaces, inheritance, polymorphism and a section of Questions and Exercises at the end.

Reading it is NOT good enough. You need to actually do the exercises in each of those trails and the ones at the end as well as try to answer the questions before looking at the answer.

Rehan Zahoor

A link is https://www.ntu.edu.sg/home/ehchua/programming/java/J3f_OOPExercises.html

Building Skills in Object-Oriented Design — Building Skills Books 5.1 documentation is a free ebook.

Rigoberto

Maybe you can get yourself a copy of "Java How to Program" by Deitel. The book is really good and it has many exercises you can practice with. That's the one I've been learning with before getting Java certified.

eudriscabrera-JavaNet

You can getting started with the Java Tutorials Learning Paths (https://docs.oracle.com/javase/tutorial/tutorialLearningPaths.html).

Besides, you can take a look at those books:

a) Murach’s Java Programming by Joel Murach

b) Head First Java by Bert Bates and Kathy Sierra

Happy Learning !.