July 2018
Intermediate to advanced
400 pages
12h 14m
English
In this chapter you learned that the var and val keywords are used when specifying a class property – var for writable, and val for read-only.
You may be wondering how a Kotlin class property works, under the hood, when targeting the JVM.
To understand how class properties are implemented, it is helpful to look at the decompiled JVM bytecode – specifically, to compare the bytecode generated for a single property depending on how it is specified. Create a new file called Student.kt. (You will delete this file after this exercise.)
First, define a class with a var property (which allows both reading and writing the class property).
Listing 12.23 Defining a Student ...