does anybody have a good intro to properties for 100% java programmers?

# announcements

[groostav]

does anybody have a good intro to properties for 100% java programmers?

[miha-x64]

groostav: in Java, get/set is property interface emulation, field is property implementation

[groostav]

lol, yes im well aware, I'm looking for a blog post or walk-through to explain the advantages of this strategy

[sreich]

i found the docs to be pretty helpful

[groostav]

their not bad, I was just looking at them, but they dont explain why kotlin has properties

[sreich]

for starters, many modern languages do and that's a bit expected

[sreich]

i would've thought the reason was clear though? you can do a lot of nice things concisely, caching and things

[sreich]

and java always had a ton of boilerplate for simply writing their own limited "properties"

[groostav]

I just had a kotlin-newbie pull request a change

class Thingy{
  var property: Model
    private set;
}

to

class Thingy{
  var property: Model
    private set;

  fun updateProperty(newModel: Model) {
    property = newModel
  }
}

because he didn't understand what two methods have the same JVM signature meant as an error message when he tried to call it fun setPropety

[miha-x64]

why

Many things IDE generates for Java (Constructors, Getters and Setters) can be just written in Kotlin, that's why 🙂

[groostav]

so what i want to do is give this kotlin newbie something to read

[groostav]

what would you guys suggest?

[sreich]

that particular thing sounds like a spot the compiler could be more helpful at, as a side note 😉

[sreich]

if there isn't one, maybe you should file a youtrack issue