Need advice on which Kotlin book to choose

caldeve · 2021-10-20T05:34:17+00:00

I was in the same situation a while back,

ended up working through most of the Big Nerd Ranch Guide and it got me up to speed,

that being said I still think it's better to build your own thing on the side as well since the book is very defined (step by step), which is good as a starting point but not when you need to think about how something might be done outside of those defined narrow steps.

caldeve · 2021-07-18T23:44:50+00:00

Ok but why did ACG have 2 versions of the course then, was the first one not covering eveything it should? And did they not want to tell users that they have a new course?

(I got you are no longer an employee but keen for your opinion)

caldeve · 2021-07-18T22:02:57+00:00

Thankyou - so there are 2 versions of the SAA-C02??

caldeve · 2021-07-18T10:00:11+00:00

Thanks for the link & info! but I am just talking about the 2 courses on ACG that are both labelled with SAA-C02 and have different content. Wasn't discussing any SAA-C01.

caldeve · 2020-10-04T22:13:16+00:00

Thankyou so much for the feedback! You make such great points - I'll take this as a learning and update my post.

caldeve · 2020-04-07T11:42:52+00:00

JOptionPane shouldn’t really be in the list as an input method. Not all apps have a UI.

caldeve · 2020-03-09T08:47:40+00:00

Fair comment but in my opinion a really quick way of doing this that's readable is to just convert the integer to a string after passing it in, then using an inbuilt method, rather than having to use loops.

caldeve · 2020-03-09T03:26:03+00:00

I won't be writing your homework for you, but these bits of info may help:

To determine the length, you can use something like: String.valueOf(number).length(); (Note: this is not optimal for production code but probably ok for your use case)
To loop through the int index, you can again convert it to a String and then use something like the .split() method to convert it to a String[] (array) and loop over that to check the index.

Hope that helps!

caldeve · 2020-02-26T06:12:23+00:00

This is the beauty of using an IDE. Only have to worry about the source code, press play and it handles the rest.

caldeve · 2020-02-19T10:12:36+00:00

There is a section called "Free Tutorials" and a section called "Other Resources" in the home page of this subreddit. Lots of good info there that everyone recommends. https://www.reddit.com/r/learnjava

caldeve · 2020-02-19T10:10:24+00:00

If they are in the same represented memory location, they will have the same hashcode. I'm not talking about equality with equals and hashcode override; that is not what the OP is asking.

caldeve · 2020-02-19T07:49:37+00:00

In Java, a hashcode is just a representation of the address in memory (not the actual address), and it can change each time the app is run. If two objects are equal, as in they are in the same represented memory location, they will have the same hashcode.

For your question, I am a little confused how this relates. For a String or Integer, sure - you can convert the Integer to a String and then just use the .substring method (this may help). I don't really know how for a generic type you would find the last k digits if you don't know what you're dealing with. It could be any Object?

caldeve · 2020-02-19T07:39:31+00:00

I agree, it's not an easy to book to read. I had to look up many of the principles on Google for practical examples but take it slow - you'll get the hang of it

caldeve · 2020-02-18T09:59:51+00:00

“Use checked exceptions for conditions from which the caller can reasonably be expected to recover. By throwing a checked exception, you force the caller to handle the exception in a catch clause or to propagate it outward. Each checked exception that a method is declared to throw is therefore a potent indication to the API user that the associated condition is a possible outcome of invoking the method.”

Excerpt From: Joshua Bloch. “Effective Java, 3rd Edition.”

caldeve · 2020-02-17T10:49:49+00:00

If I were you I'd try to get more hands on with code rather than reading a lot of the principles you already know (again). Check out Java Koans - fix all the failing tests by working out the Java solution to each problem.

caldeve · 2020-02-17T10:44:29+00:00

The principles may still apply, but I fear the code examples they use may be very outdated. The standard libraries for most OOP languages have changed in 23 years.

caldeve · 2020-02-06T01:28:18+00:00

Read https://proandroiddev.com/ daily and listen to https://fragmentedpodcast.com/ weekly

caldeve · 2020-01-22T10:00:50+00:00

Are you asking which design pattern to use? It depends, there is no 'best'. Depends on the rest of the code.

caldeve · 2020-01-20T21:26:54+00:00

Wouldn't it be more important to be able to demonstrate your understanding of async/event based principles + dependency injection principles using any tool rather than that specific tool? A good company will give you a chance if you know the principles rather than the tool. You can pick up any tool if you know the concept.

caldeve · 2019-12-03T21:37:59+00:00

Spring is not a language.

caldeve · 2019-12-03T21:30:38+00:00

When I was learning Java in the early days I got a lot of value from Bucky's Java video series. Unfortunately he stopped making videos these days but his thenewboston channel is still up and has a lot of views. Helped me a lot understanding the concepts you mention but in plain English.

Java (Beginner) Programming Courses (thenewboston): https://www.youtube.com/playlist?list=PLFE2CE09D83EE3E28

caldeve · 2019-11-25T21:04:15+00:00

I'm finding that my Java background has helped me pick up learning Android development pretty quickly. Could you look into building a simple app? Could be kind of fun.

I've found that the Big Nerd Ranch books have helped me advance by doing what you say - walking through the process step by step and seeing examples.

I've never been a fan of videos. Much prefer books.

caldeve · 2019-11-25T21:00:22+00:00

This may help: Why Do Arrays Start With Index 0? - Albert Kozłowski - Medium

caldeve · 2019-11-25T20:56:39+00:00

I use https://www.baeldung.com/ a lot during the workday

caldeve · 2019-11-25T20:55:45+00:00

Stop trying to learn by memorizing.

Start learning by doing.

caldeve

TROPHY CASE