diff --git a/spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java b/spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java
index cd9d3157dfd..06b9b1b541a 100644
--- a/spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java
+++ b/spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -46,7 +46,7 @@ import org.springframework.util.StringUtils;
 
 /**
  * A powerful {@link PropertyAccessor} that uses reflection to access properties
- * for reading and possibly also for writing.
+ * for reading and possibly also for writing on a target instance.
  *
  * <p>A property can be referenced through a public getter method (when being read)
  * or a public setter method (when being written), and also as a public field.
@@ -96,8 +96,8 @@ public class ReflectivePropertyAccessor implements PropertyAccessor {
 	}
 
 	/**
-	 * Create a new property accessor for reading and possibly writing.
-	 * @param allowWrite whether to also allow for write operations
+	 * Create a new property accessor for reading and possibly also writing.
+	 * @param allowWrite whether to allow write operations on a target instance
 	 * @since 4.3.15
 	 * @see #canWrite
 	 */
@@ -615,8 +615,8 @@ public class ReflectivePropertyAccessor implements PropertyAccessor {
 
 		@Override
 		public String toString() {
-			return "CacheKey [clazz=" + this.clazz.getName() + ", property=" + this.property + ", " +
-					this.property + ", targetIsClass=" + this.targetIsClass + "]";
+			return "PropertyCacheKey [clazz=" + this.clazz.getName() + ", property=" + this.property +
+					", targetIsClass=" + this.targetIsClass + "]";
 		}
 
 		@Override
@@ -640,6 +640,9 @@ public class ReflectivePropertyAccessor implements PropertyAccessor {
 	 */
 	public static class OptimalPropertyAccessor implements CompilablePropertyAccessor {
 
+		/**
+		 * The member being accessed.
+		 */
 		public final Member member;
 
 		private final TypeDescriptor typeDescriptor;