Use String::isEmpty instead of "".equals(arg) when arg is not null

spring-context/src/main/java/org/springframework/jndi/JndiTemplateEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -38,7 +38,7 @@ public class JndiTemplateEditor extends PropertyEditorSupport {
 		if (text == null) {
 			throw new IllegalArgumentException("JndiTemplate cannot be created from null string");
 		}
-		if ("".equals(text)) {
+		if (text.isEmpty()) {
 			// empty environment
 			setValue(new JndiTemplate());
 		}