EPAM Systems Senior Android Developer Interview Questions and Answers

Coroutines are a way to perform asynchronous programming in a sequential manner.

• Coroutines allow for writing asynchronous code that looks like synchronous code.

• They can be used to perform long-running tasks without blocking the main thread.

• Coroutines can be cancelled or paused and resumed at a later time.

• They are supported in Kotlin through the kotlinx.coroutines library.

The root class in Java is the Object class, which is the parent class for all other classes in Java.

• The Object class is used to provide common methods and behaviors that are inherited by all other classes.

• It defines methods like toString(), equals(), and hashCode() that can be overridden by subclasses.

• All classes in Java implicitly extend the Object class, either directly or indirectly.

• For example, the String class ext

Kotlin provides several types of collections, including arrays and lists, to store and manipulate data.

• Kotlin arrays are fixed-size collections that store elements of the same type.

• Kotlin lists are dynamic-size collections that can store elements of different types.

• To create an array of strings in Kotlin, you can use the Array<String> type.

• Alternatively, you can use the shortcut syntax StringArray.

• Example: val na...read more