Question

Which of the following"main"functions are**invalid** in Kotlin?

Accepted Answer

```kotlin
fun main(Array<String>: args){
    println("Hello, World!")
}
```

Accepted Answer

```kotlin
fun main(args: Array<String>){
    println("Hello, World!")
}
```

Accepted Answer

```kotlin
def main(args: Array[String]): Unit={
    println("Hello, World!")
}
```

Answer

```kotlin
public static void main(String[] args){
    System.out.println("Hello, World!");
}
```

Question from the Kotlin test