Hello world!01/12/202011/12/2020 始まりはいつもHello world!から。Contents1. Java2. Kotlin Javapublic class Main { public static void main(String[] args) { System.out.println("Hello World!"); } }Kotlinfun main(args: Array<String>) { println("Hello World!") } Java,Kotlin,ProgrammingJava,KotlinPosted by codive