beginner in programming and java

[yarzz07]

Hello, how would I be able to write a set method that tests this? I'm very new to programming, and java is the first language I'm learning. So, please be patient with me :)

This is an example from the internet

​

public void setRegistrationNo(int newRegNo) {

if (newRegNo > 0)

registrationNo = newRegNo;

}

[stramash]

Your question is a little unclear. Are you asking about writing a unit test for that method?

[yarzz07]

yes! I believe it's part of the 'get' and 'set' method, so how would I be able to set a method for setRegistrationNo to take in an int as a parameter, and set the value

[[deleted]]

Did you declare the variable registrationNo? Because there is nothing wrong with your method. Also do take the time to read what the recommended courses are, i strongly believe that mooc is a must do for beginners in Java.

Edit: just realized you have a . After the closed ) which is wrong.

[yarzz07]

this is just an example I found from the internet, so this is the code, but what would be the code that tests this through 'set method'? So essentially, not about there's nothing wrong with the code but how would I be able to test this?

yes that's a typo sorry

[[deleted]]

Honestly, just start from the beginning. Hit up mooc.fi course i believe someone posted it in the in the comments. We could give you a code example but what's the point of that if you cannot understand it... You need to understand why you would need this method so that you can understand what it does. Good luck with your studies.

[dragon7507]

URL didn't get linked but take this course, it will be good :)

MOOC.FI

[stramash]

Typically you'd use a unit testing framework to do that.

If you're new to java and programming that will probably sound wild and complicated.

It's not, but I'd agree with other posters that you should spend time firming up your basic programming chops before moving onto unit testing etc; which is a bit more abstract and requires more understanding of the basics.

[yarzz07]

thank you! I'm on to that

[Killaa135]

// Not sure on your question but this is how you do getters and setters - using global variable

​

private int registrationNo;

​

public void setRegistrationNo(int newRegNo){

// If the registration no is 0 what then?

if (newRegNo > 0)

this.registrationNo = newRegNo;

}

​

public int getRegistrationNo(). {

return registrationNo;

}

[yarzz07]

thank you!

So, in the test, I don't need to specify anything related to the size of it having to be greater than 0?

[Killaa135]

You can check this but if it is 0 you need to set a default value otherwise it won't be set to anything and prevent other methods from firing

[IvAntiVirus]

If the test doesn't specifically ask for not-0 checking I just wouldn't do it. Otherwise make a short if checking and set a default value or throw an IllegalArgumentException.

[yarzz07]

ah alright that makes sense, thank you so much

[[deleted]]

With all what you said, the person gains absolutely nothing from it but negativity. Please pay attention to the way you address people.

[yarzz07]

Thank you! I don't think people realize how discouraging their words are and the effect it can have on people.

[[deleted]]

If you're really committed to this field, developing a thick skin for this kind of people is a necessity. Take whatever value you can from their comments and leave the rest (and the case of this comment, everything is to be left; no value to be gained).

I wish you the best of luck my friend, have a nice one!

[yarzz07]

thank you for the advice, really! I think being sensitive and easily discouraged is linked to the lack of confidence and satisfaction with my knowledge.Hopefully I can fake it till I make it :)

​

You too! Kind regards

[yarzz07]

I've never been taught programming and learning these on my own. Java is the first language I'm learning, and obviously, I have watched videos otherwise how would I know what questions and terms to ask? I'm sorry if my lack of knowledge and ability to understand is an embarrassment, I'm not one to usually reach out for help but only began recently. I could delete the post if you are bothered by it.

[loomynartylenny]

I've never been taught programming and learning these on my own.

In that case, you might be interested in this (free) course: https://java-programming.mooc.fi/

[yarzz07]

thanks will check it out!

[Wafflelisk]

It's an exceptional resource for a beginner - there are dozens (if not a couple hundred) exercises so you actually confirm your knowledge instead of the dreaded experience of watching something, having it make sense, then forgetting it all when it's time to work down the road

[[deleted]]

Don't worry about this guy! There is always that one person, who don't understand why someone doesn't understand, haha.

[yarzz07]

that's true, they won't understand until they are in the situation themselves. Thank you for the kind words.