seems done

das-boot/pom.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>co.boot</groupId>
+    <artifactId>das-boot</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <packaging>
+<parent>
+<parent>
+</project>

initial/src/main/java/hello/Application.java

@@ -0,0 +1,14 @@
+package hello;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.SpringApplication;
+
+@SpringBootApplication
+public class Application {
+
+   public static void main(String[] args){
+
+       SpringApplication.run(Application.class,args);
+   }
+
+}

initial/src/main/java/hello/Greeting.java

@@ -0,0 +1,19 @@
+package hello;
+
+public class Greeting {
+    private final long id;
+    private final String content;
+
+    public Greeting(long id, String content) {
+        this.id = id;
+        this.content = content;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getContent() {
+        return content;
+    }
+}

initial/src/main/java/hello/GreetingController.java

@@ -0,0 +1,22 @@
+package hello;
+
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+@RestController
+public class GreetingController {
+
+
+    private static final String template = "Hello,%s!";
+    private final AtomicLong counter = new AtomicLong();
+
+    @RequestMapping("/greeting")
+    public Greeting greeting(@RequestParam(value = "name", defaultValue = "World") String name) {
+        return new Greeting(counter.incrementAndGet(),
+                String.format(template, name));
+
+    }
+}