Sami radwan

you mean to use shortcuts?

How can I move and open folders for example and files? it will take more time!

I work on a laptop and I tried many wireless mice and I found them to be a little clumsy. I used to work with a better mouse in the past but I don't remember which one it was.  I want something accurate to increase my productivity while working and coding.  Any experience or recommendations?

Thank you for your reply.

As you know there many courses and tutorials. The fact is that I found a good Android course but it just cover the basics of the language (e.g. variables, for and while loop, functions, classes, inheritance and interfaces.) after that thw course goes to Android. I just was hesitated if I should go with this or learn thw language in a totally different course that teach a little bit more .. then move to Android.

I have two paths:

1. To learn all about the programming language (Kotlin or Java) then learn about Android.

2. To learn the basics and fundamentals of the language and after that learn about Android and then expand my programming fundamentals when needed.

Which path is better and why?

Sorry to post this here but I'm sure I will find someone who can help. I'm watching video tutorials and the author create an object in Kotlin using the following syntax:

var person = Person()

Is using var when creating objects considered a bad pratice? altough the author seem to be professional.

Actually, the problem is not with Kotlin to find tutorials. The problem is with Java. It is not with Java itself. But with Java and Android. It seems that all lessons now and video tutorials focus in Kotlin and Android not Java and Android.

Tim,

would you recommend Java or Kotlin for Android for a beginner and why?

Well I thought API is only the Java Base class library. But it seems that it is something bigger tha  that, right?

No problems

My final words is this: JetBrains built an API similar to Java API. So need to use Java API when it is already written in Kotlin.

No need for using it except if you are a previous Java developer. Otherwise, you only need Kotlin.

https://developer.android.com/reference/packages

The link you provided have both versions (Kotlin and Java).

please explain what you mean by syntactic sugar? do you mean in order to implement this code it will run java behind the scenes? What I know is  that the compiler transalte Kotlin to bytecode, but I didn't know that Kotlin under the hood is still Java! How comes?

How some developers build full apps in Android using only Kotlin?

Look at this API: https://kotlinlang.org/api/latest/jvm/stdlib/

it is in Kotlin

Correct but I still can use it without knowing Java. I think through Kotlin. Am I right?

Why learn Java 8 first? just for legacy code? what I want only to build apps from scratch?