Fix [serial] compiler warnings

Fix serialization warnings by applying @SuppressWarnings("serial")
when appropriate.

In certain cases and for unknown reasons, a correctly-placed
@SuppressWarnings("serial") annotation will fix the warning at the
javac level (i.e. the Gradle command-line), but will produce an
"unnecessary @SuppressWarnings" warning within Eclipse. In these
cases, a private static final serialVersionUID field has been added
with the default value of 1L.

spring-core/src/test/java/org/springframework/beans/Colour.java

@@ -21,6 +21,7 @@ import org.springframework.core.enums.ShortCodedLabeledEnum;
 /**
  * @author Rob Harrop
  */
+@SuppressWarnings("serial")
 public class Colour extends ShortCodedLabeledEnum {
 
 	public static final Colour RED = new Colour(0, "RED");
@@ -32,4 +33,4 @@ public class Colour extends ShortCodedLabeledEnum {
 		super(code, label);
 	}
 
-}
+}

spring-core/src/test/java/org/springframework/beans/DerivedTestBean.java

@@ -22,6 +22,7 @@ import java.io.Serializable;
  * @author Juergen Hoeller
  * @since 21.08.2003
  */
+@SuppressWarnings("serial")
 public class DerivedTestBean extends TestBean implements Serializable {
 
 	private String beanName;
@@ -79,4 +80,4 @@ public class DerivedTestBean extends TestBean implements Serializable {
 		return destroyed;
 	}
 
-}
+}

spring-core/src/test/java/org/springframework/core/AttributeAccessorSupportTests.java

@@ -32,6 +32,7 @@ public class AttributeAccessorSupportTests extends TestCase {
 
 	private AttributeAccessor attributeAccessor;
 
+	@SuppressWarnings("serial")
 	protected void setUp() throws Exception {
 		this.attributeAccessor = new AttributeAccessorSupport() {
 		};

spring-core/src/test/java/org/springframework/core/ExceptionDepthComparatorTests.java

@@ -87,18 +87,23 @@ public class ExceptionDepthComparatorTests {
 		return ExceptionDepthComparator.findClosestMatch(Arrays.asList(classes), new TargetException());
 	}
 
+	@SuppressWarnings("serial")
 	public class HighestDepthException extends Throwable {
 	}
 
+	@SuppressWarnings("serial")
 	public class LowestDepthException extends HighestDepthException {
 	}
 
+	@SuppressWarnings("serial")
 	public class TargetException extends LowestDepthException {
 	}
 
+	@SuppressWarnings("serial")
 	public class SameDepthException extends LowestDepthException {
 	}
 
+	@SuppressWarnings("serial")
 	public class NoDepthException extends TargetException {
 	}
 

spring-core/src/test/java/org/springframework/core/NestedExceptionTests.java

@@ -28,6 +28,7 @@ import junit.framework.Assert;
  */
 public class NestedExceptionTests extends TestCase {
 
+	@SuppressWarnings("serial")
 	public void testNestedRuntimeExceptionWithNoRootCause() {
 		String mesg = "mesg of mine";
 		// Making a class abstract doesn't _really_ prevent instantiation :-)
@@ -44,6 +45,7 @@ public class NestedExceptionTests extends TestCase {
 		assertFalse(stackTrace.indexOf(mesg) == -1);
 	}
 
+	@SuppressWarnings("serial")
 	public void testNestedRuntimeExceptionWithRootCause() {
 		String myMessage = "mesg for this exception";
 		String rootCauseMesg = "this is the obscure message of the root cause";
@@ -64,6 +66,7 @@ public class NestedExceptionTests extends TestCase {
 		assertFalse(stackTrace.indexOf(rootCauseMesg) == -1);
 	}
 
+	@SuppressWarnings("serial")
 	public void testNestedCheckedExceptionWithNoRootCause() {
 		String mesg = "mesg of mine";
 		// Making a class abstract doesn't _really_ prevent instantiation :-)
@@ -80,6 +83,7 @@ public class NestedExceptionTests extends TestCase {
 		assertFalse(stackTrace.indexOf(mesg) == -1);
 	}
 
+	@SuppressWarnings("serial")
 	public void testNestedCheckedExceptionWithRootCause() {
 		String myMessage = "mesg for this exception";
 		String rootCauseMesg = "this is the obscure message of the root cause";

spring-core/src/test/java/org/springframework/core/convert/support/DefaultConversionTests.java

@@ -240,6 +240,7 @@ public class DefaultConversionTests {
 		conversionService.convert(Integer.valueOf(1), CustomNumber.class);
 	}
 
+	@SuppressWarnings("serial")
 	public static class CustomNumber extends Number {
 
 		@Override

spring-core/src/test/java/org/springframework/core/convert/support/MapToMapConverterTests.java

@@ -217,6 +217,7 @@ public class MapToMapConverterTests {
 		assertEquals(NoDefaultConstructorMap.class, result.getClass());
 	}
 
+	@SuppressWarnings("serial")
 	public static class NoDefaultConstructorMap<K, V> extends HashMap<K, V> {
 		public NoDefaultConstructorMap(Map<? extends K, ? extends V> m) {
 			super(m);

spring-core/src/test/java/org/springframework/core/enums/LabeledEnumTests.java

@@ -118,6 +118,7 @@ public class LabeledEnumTests extends TestCase {
 	}
 
 
+	@SuppressWarnings("serial")
 	private static class Other extends StaticLabeledEnum {
 
 		public static final Other THING1 = new Other(1, "Thing1");
@@ -130,6 +131,7 @@ public class LabeledEnumTests extends TestCase {
 	}
 
 
+	@SuppressWarnings("serial")
 	private static class Dog extends StaticLabeledEnum {
 
 		public static final Dog GOLDEN_RETRIEVER = new Dog(11, null) {
@@ -159,6 +161,7 @@ public class LabeledEnumTests extends TestCase {
 	}
 
 
+	@SuppressWarnings("serial")
 	private static abstract class ValuedEnum extends StaticLabeledEnum {
 
 		public static final ValuedEnum ONE = new ValuedEnum(1, "one") {

spring-core/src/test/java/org/springframework/util/CachingMapDecoratorTests.java

@@ -94,6 +94,7 @@ public class CachingMapDecoratorTests extends TestCase {
 	}
 
 
+	@SuppressWarnings("serial")
 	private static class MyCachingMap extends CachingMapDecorator<String, String> {
 
 		private boolean createCalled;

spring-core/src/test/java/org/springframework/util/xml/AbstractStaxXMLReaderTestCase.java

@@ -144,6 +144,7 @@ public abstract class AbstractStaxXMLReaderTestCase {
 	protected abstract AbstractStaxXMLReader createStaxXmlReader(InputStream inputStream) throws XMLStreamException;
 
 	/** Easymock {@code AbstractMatcher} implementation that matches SAX arguments. */
+	@SuppressWarnings("serial")
 	protected static class SaxArgumentMatcher extends AbstractMatcher {
 
 		@Override