What are the main differences between Java and Kotlin programming languages?

Main differences between Java and Kotlin:

• Syntax and conciseness: Kotlin is more compact and expressive, allowing you to write less code for the same tasks.
• Safety: Kotlin natively supports null safety, reducing the number of NullPointerException errors.
• Compatibility: Kotlin is fully compatible with Java, can use Java libraries, and runs on the JVM.
• Functional features: Kotlin supports higher-order functions, lambda expressions, and extension functions.
• Coroutine support: Kotlin has built-in support for asynchronous programming through coroutines.

Example of Kotlin:

fun main() {
    val list = listOf(1, 2, 3, 4)
    val doubled = list.map { it * 2 }
    println(doubled) // [2, 4, 6, 8]
}