You are upgrading a Java class to Kotlin. What should you use to replace the Java class's static fields?

Your code need to try casting an object. If the cast is not possible, you do not want an exception generated, instead you want null to be assigned. Which operator can safely cast a value?

Kotlin will not compile this code snippet. What is wrong? class Employee class Manager : Employee()

Which function changes the value of the element at the current iterator location?

What three methods does this class have? Class Person

Which is the proper way to declare a singleton named DatabaseManager?

Which statement declares a variable mileage whose value never changes and is inferred to be an integer?

What are the two ways to make a coroutine's computation code cancellable?

What is the execution order of init blocks and properties during initialization?

This code is occasionally throwing a null pointer exception (NPE). How can you change the code so it never throws as NPE? println("length of First Name = ${firstName!!.length}")

You have two arrays, a and b. Which line combines a and b as a list containing the contents of both? val a = arrayOf(1, 2, 3) val b = arrayOf(100, 200, 3000)