renaming the boot ops module

spring-boot-ops/src/main/java/com/baeldung/springbootsimple/SpringBootTomcatApplication.java

@@ -0,0 +1,13 @@
+package com.baeldung.springbootsimple;
+
+import org.springframework.boot.*;
+import org.springframework.boot.autoconfigure.*;
+import org.springframework.boot.web.servlet.support.*;
+
+@SpringBootApplication
+public class SpringBootTomcatApplication extends SpringBootServletInitializer {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootTomcatApplication.class, args);
+    }
+}

spring-boot-ops/src/main/java/com/baeldung/springbootsimple/TomcatController.java

@@ -0,0 +1,18 @@
+package com.baeldung.springbootsimple;
+
+import org.springframework.web.bind.annotation.*;
+
+import java.util.*;
+import java.util.stream.*;
+
+@RestController
+public class TomcatController {
+
+    @GetMapping(value = "/hello")
+    public Collection<String> sayHello() {
+        return IntStream.range(0, 10)
+                .mapToObj(i -> "Hello number " + i)
+                .collect(Collectors.toList());
+    }
+
+}