BAEL 3234 - Add missing code snippets (#9285)

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

@@ -7,7 +7,7 @@ import org.springframework.context.annotation.ComponentScan;
 import com.baeldung.configurationproperties.ConfigProperties;
 
 @SpringBootApplication
-@ComponentScan(basePackageClasses = { ConfigProperties.class, JsonProperties.class, CustomJsonProperties.class, Database.class })
+@ComponentScan(basePackageClasses = { ConfigProperties.class, JsonProperties.class, CustomJsonProperties.class})
 public class ConfigPropertiesDemoApplication {
     public static void main(String[] args) {
         new SpringApplicationBuilder(ConfigPropertiesDemoApplication.class).initializers(new JsonPropertyContextInitializer())

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

@@ -1,33 +0,0 @@
-package com.baeldung.properties;
-
-import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.context.annotation.Configuration;
-
-@Configuration
-@ConfigurationProperties(prefix = "database")
-public class Database {
-
-    private String url;
-    private String username;
-    private String password;
-    
-    public String getUrl() {
-        return url;
-    }
-    public void setUrl(String url) {
-        this.url = url;
-    }
-    public String getUsername() {
-        return username;
-    }
-    public void setUsername(String username) {
-        this.username = username;
-    }
-    public String getPassword() {
-        return password;
-    }
-    public void setPassword(String password) {
-        this.password = password;
-    }
-    
-}