Mastering Spring 5.0

Kotlin support

Kotlin is a statically typed JVM language that enables code that is expressive, short, and readable. Spring framework 5.0 has good support for Kotlin.

Consider a simple Kotlin program illustrating a data class, as shown here:

    import java.util.*    data class Todo(var description: String, var name: String, var      targetDate : Date)    fun main(args: Array<String>) {      var todo = Todo("Learn Spring Boot", "Jack", Date())      println(todo)        //Todo(description=Learn Spring Boot, name=Jack,         //targetDate=Mon May 22 04:26:22 UTC 2017)      var todo2 = todo.copy(name = "Jill")      println(todo2)         //Todo(description=Learn Spring Boot, name=Jill,          //targetDate=Mon May 22 04:26:22 UTC 2017)      var todo3 = todo.copy()      println(todo3.equals(todo)) //true    }  

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