Add @Override to remaining source files

Issue: SPR-10130

spring-webmvc/src/test/java/org/springframework/web/servlet/mvc/method/annotation/RequestMappingHandlerMappingTests.java

@@ -119,6 +119,7 @@ public class RequestMappingHandlerMappingTests {
 	@Test
 	public void resolveEmbeddedValuesInPatterns() {
 		this.handlerMapping.setEmbeddedValueResolver(new StringValueResolver() {
+			@Override
 			public String resolveStringValue(String value) {
 				return "/${pattern}/bar".equals(value) ? "/foo/bar" : value;
 			}

spring-webmvc/src/test/java/org/springframework/web/servlet/tags/form/Country.java

@@ -54,6 +54,7 @@ public class Country {
 	}
 
 
+	@Override
 	public String toString() {
 		return this.name + "(" + this.isoCode + ")";
 	}

spring-webmvc/src/test/java/org/springframework/web/servlet/tags/form/ItemPet.java

@@ -41,6 +41,7 @@ public class ItemPet {
 		return this.name.toUpperCase();
 	}
 
+	@Override
 	public boolean equals(Object other) {
 		if (this == other) {
 			return true;
@@ -52,6 +53,7 @@ public class ItemPet {
 		return (this.name != null && this.name.equals(otherPet.getName()));
 	}
 
+	@Override
 	public int hashCode() {
 		return this.name.hashCode();
 	}

spring-webmvc/src/test/java/org/springframework/web/servlet/tags/form/OptionTagTests.java

@@ -532,6 +532,7 @@ public class OptionTagTests extends AbstractHtmlElementTagTests {
 			return new RulesVariant(rules, variant);
 		}
 
+		@Override
 		public boolean equals(Object obj) {
 			if (obj instanceof RulesVariant) {
 				RulesVariant other = (RulesVariant) obj;
@@ -540,6 +541,7 @@ public class OptionTagTests extends AbstractHtmlElementTagTests {
 			return false;
 		}
 
+		@Override
 		public int hashCode() {
 			return this.toId().hashCode();
 		}

spring-webmvc/src/test/java/org/springframework/web/servlet/tags/form/TestTypes.java

@@ -33,6 +33,7 @@ enum TestEnum {
 		return "Value: " + name();
 	}
 
+	@Override
 	public String toString() {
 		return "TestEnum: " + name();
 	}