Merge pull request #26673 from Rebwon

* pr/26673:
  Update copyright year of changed files
  Polish

Closes gh-26673

spring-core/src/main/java/org/springframework/core/convert/TypeDescriptor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -515,7 +515,7 @@ public class TypeDescriptor implements Serializable {
 		for (Annotation ann : getAnnotations()) {
 			builder.append("@").append(ann.annotationType().getName()).append(' ');
 		}
-		builder.append(getResolvableType().toString());
+		builder.append(getResolvableType());
 		return builder.toString();
 	}
 

spring-core/src/test/java/org/springframework/core/env/JOptCommandLinePropertySourceTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -181,7 +181,7 @@ class JOptCommandLinePropertySourceTests {
 	}
 
 	public enum OptionEnum {
-		VAL_1;
+		VAL_1
 	}
 
 }