Polishing

spring-core/src/main/java/org/springframework/core/env/AbstractEnvironment.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@
 package org.springframework.core.env;
 
 import java.security.AccessControlException;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashSet;
 import java.util.Map;
@@ -249,6 +250,9 @@ public abstract class AbstractEnvironment implements ConfigurableEnvironment {
 	@Override
 	public void setActiveProfiles(String... profiles) {
 		Assert.notNull(profiles, "Profile array must not be null");
+		if (logger.isDebugEnabled()) {
+			logger.debug("Activating profiles " + Arrays.asList(profiles));
+		}
 		synchronized (this.activeProfiles) {
 			this.activeProfiles.clear();
 			for (String profile : profiles) {