BAEL-4321 fix package name in imports and convert tabs to spaces

spring-boot-modules/spring-boot-properties-3/src/main/java/com/baeldung/boot/properties/DemoApplication.java

@@ -1,4 +1,4 @@
-package com.baeldung.boot.data;
+package com.baeldung.boot.properties;
 
 import com.baeldung.boot.data.config.TshirtSizeConfig;
 import org.springframework.boot.SpringApplication;
@@ -9,8 +9,8 @@ import org.springframework.boot.context.properties.EnableConfigurationProperties
 @EnableConfigurationProperties(TshirtSizeConfig.class)
 public class DemoApplication {
 
-	public static void main(String[] args) {
-		SpringApplication.run(DemoApplication.class, args);
-	}
+    public static void main(String[] args) {
+        SpringApplication.run(DemoApplication.class, args);
+    }
 
 }

spring-boot-modules/spring-boot-properties-3/src/main/java/com/baeldung/boot/properties/config/TshirtSizeConfig.java

@@ -1,4 +1,4 @@
-package com.baeldung.boot.data.config;
+package com.baeldung.boot.properties.config;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
 

spring-boot-modules/spring-boot-properties-3/src/main/java/com/baeldung/boot/properties/controller/TshirtSizeController.java

@@ -1,4 +1,4 @@
-package com.baeldung.boot.data.controller;
+package com.baeldung.boot.properties.controller;
 
 import org.springframework.web.bind.annotation.*;
 import com.baeldung.boot.data.service.SizeConverterService;

spring-boot-modules/spring-boot-properties-3/src/main/java/com/baeldung/boot/properties/service/SizeConverterImpl.java

@@ -1,4 +1,4 @@
-package com.baeldung.boot.data.service;
+package com.baeldung.boot.properties.service;
 
 import org.springframework.stereotype.Service;
 import com.baeldung.boot.data.config.TshirtSizeConfig;

spring-boot-modules/spring-boot-properties-3/src/main/java/com/baeldung/boot/properties/service/SizeConverterService.java

@@ -1,4 +1,4 @@
-package com.baeldung.boot.data.service;
+package com.baeldung.boot.properties.service;
 
 
 public interface SizeConverterService {

spring-boot-modules/spring-boot-properties-3/src/main/resources/application.yml

@@ -1,10 +1,10 @@
-t-shirt-size:
-  simple-mapping:
-    XS: 6
-    S:  8
-    M:  10
-    L:  12
-    XL: 14
+  t-shirt-size:
+    simple-mapping:
+      XS: 6
+      S:  8
+      M:  10
+      L:  12
+      XL: 14
 
 
   complex-mapping:

spring-boot-modules/spring-boot-properties-3/src/test/java/com/baeldung/boot/properties/controller/TshirtSizeControllerTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.boot.data.controller;
+package com.baeldung.boot.properties.controller;
 
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;