kotlin
fun String.addExclamationMark(): String {
return this + "!"
}
groovy
plugins {
id 'org.jetbrains.kotlin.jvm' version '1.5.21'
}
dependencies {
implementation 'org.jetbrains.kotlin:kotlin-stdlib'
}
import static com.example.ExtensionsKt.addExclamationMark;
public class Main {
public static void main(String[] args) {
String str = "Hello";
String result = addExclamationMark(str);
}
}
