import java.net.InetAddress; import java.util.List; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.boot.context.properties.ConstructorBinding; import org.springframework.boot.context.properties.bind.DefaultValue; public class Example { // getters... private final String first; private final String second; public Example(String first, String second) { this.first = first; this.second = second; } // main method public static void main(String[] args) { System.out.println("Hello World!"); } }