Listing 5.11 Custom Method Name Using // Kotlin Again, there’s currently no such mechanism for properties starting with has but you can always define your own JVM name by annotating the getter or setter with as in Listing 5.11. Thus, calling the Boolean property isMutable instead would result in the getter of the same name isMutable. However, if the property name itself starts with is, the property name is used as the getter name-and not just for Boolean expressions this is irrespective of the property type.

Notice that Boolean getters also use the prefix get by default instead of is or has. tMutable( true) // Uses setter of ‘var’īoolean b = kotlinClass.getMutable() // Uses getter of ‘var’

String s = kotlinClass.getFixed() // Uses getter of ‘val’ KotlinClass kotlinClass = new KotlinClass() Listing 5.10 Calling Getters and Setters // Kotlin They’re created automatically and can be accessed from Java as you would expect, as shown in Listing 5.10. Contrarily, when talking about “properties,” I’m referring to Kotlin because they don’t directly exist in Java.Īs you know, you don’t need to implement property getters and setters manually in Kotlin. Accessing Propertiesīefore diving into the details, remember that when I say “field,” I’m usually referring to Java (unless I’m explicitly referring to Kotlin’s backing fields). An additional benefit of this is that you get more insights into the inner workings of Kotlin. The best way to understand how to access certain elements, such as extension functions or top-level declarations, is to explore how Kotlin translates to Java bytecode. The other way around, Kotlin code can also be called from Java. Learn More Buy Using Kotlin Code from Java

Kotlin internal meaning