Polishing

spring-context/src/main/java/org/springframework/cache/annotation/SpringCacheAnnotationParser.java

@@ -196,7 +196,7 @@ public class SpringCacheAnnotationParser implements CacheAnnotationParser, Seria
 	}
 
 	private <A extends Annotation> Collection<A> getAnnotations(AnnotatedElement ae, Class<A> annotationType) {
-		Collection<A> anns = new ArrayList<A>(2);
+		Collection<A> anns = new ArrayList<A>(1);
 
 		// look at raw annotation
 		A ann = ae.getAnnotation(annotationType);
@@ -212,7 +212,7 @@ public class SpringCacheAnnotationParser implements CacheAnnotationParser, Seria
 			}
 		}
 
-		return (anns.isEmpty() ? null : anns);
+		return (!anns.isEmpty() ? anns : null);
 	}
 
 	/**

spring-context/src/main/java/org/springframework/context/annotation/BeanAnnotationHelper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2011 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -29,17 +29,18 @@ import org.springframework.core.annotation.AnnotationUtils;
 class BeanAnnotationHelper {
 
 	/**
-	 * Return whether the given method is annotated directly or indirectly with @Bean.
+	 * Return whether the given method is directly or indirectly annotated with
+	 * the {@link Bean} annotation.
 	 */
 	public static boolean isBeanAnnotated(Method method) {
-		return AnnotationUtils.findAnnotation(method, Bean.class) != null;
+		return (AnnotationUtils.findAnnotation(method, Bean.class) != null);
 	}
 
 	public static String determineBeanNameFor(Method beanMethod) {
-		// by default the bean name is the name of the @Bean-annotated method
+		// By default, the bean name is the name of the @Bean-annotated method
 		String beanName = beanMethod.getName();
 
-		// check to see if the user has explicitly set the bean name
+		// Check to see if the user has explicitly set a custom bean name...
 		Bean bean = AnnotationUtils.findAnnotation(beanMethod, Bean.class);
 		if (bean != null && bean.name().length > 0) {
 			beanName = bean.name()[0];

spring-context/src/test/java/org/springframework/context/annotation/ComponentScanAnnotationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -44,7 +44,7 @@ public class ComponentScanAnnotationTests {
 
 @Configuration
 @ComponentScan(
-	basePackageClasses={TestBean.class},
+	basePackageClasses = TestBean.class,
 	nameGenerator = DefaultBeanNameGenerator.class,
 	scopedProxy = ScopedProxyMode.NO,
 	scopeResolver = AnnotationScopeMetadataResolver.class,
@@ -61,6 +61,6 @@ public class ComponentScanAnnotationTests {
 class MyConfig {
 }
 
-@ComponentScan(basePackageClasses=example.scannable.NamedComponent.class)
+@ComponentScan(basePackageClasses = example.scannable.NamedComponent.class)
 class SimpleConfig {
 }

spring-context/src/test/java/org/springframework/context/annotation/ComponentScanParserBeanDefinitionDefaultsTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -122,7 +122,7 @@ public class ComponentScanParserBeanDefinitionDefaultsTests {
 			context.refresh();
 			fail("expected exception due to multiple matches for byType autowiring");
 		}
-		catch (UnsatisfiedDependencyException e) {
+		catch (UnsatisfiedDependencyException ex) {
 			// expected
 		}
 	}
@@ -161,7 +161,7 @@ public class ComponentScanParserBeanDefinitionDefaultsTests {
 			context.refresh();
 			fail("expected exception due to dependency check");
 		}
-		catch (UnsatisfiedDependencyException e) {
+		catch (UnsatisfiedDependencyException ex) {
 			// expected
 		}
 	}
@@ -230,7 +230,6 @@ public class ComponentScanParserBeanDefinitionDefaultsTests {
 
 		private boolean destroyed;
 
-
 		public DefaultsTestBean() {
 			INIT_COUNT++;
 		}

spring-context/src/test/java/org/springframework/context/annotation/ComponentScanParserScopedProxyTests.java

@@ -42,11 +42,13 @@ public class ComponentScanParserScopedProxyTests {
 	@Rule
 	public final ExpectedException exception = ExpectedException.none();
 
+
 	@Test
 	public void testDefaultScopedProxy() {
 		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
 				"org/springframework/context/annotation/scopedProxyDefaultTests.xml");
 		context.getBeanFactory().registerScope("myScope", new SimpleMapScope());
+
 		ScopedProxyTestBean bean = (ScopedProxyTestBean) context.getBean("scopedProxyTestBean");
 		// should not be a proxy
 		assertFalse(AopUtils.isAopProxy(bean));
@@ -58,6 +60,7 @@ public class ComponentScanParserScopedProxyTests {
 		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
 				"org/springframework/context/annotation/scopedProxyNoTests.xml");
 		context.getBeanFactory().registerScope("myScope", new SimpleMapScope());
+
 		ScopedProxyTestBean bean = (ScopedProxyTestBean) context.getBean("scopedProxyTestBean");
 		// should not be a proxy
 		assertFalse(AopUtils.isAopProxy(bean));
@@ -69,6 +72,7 @@ public class ComponentScanParserScopedProxyTests {
 		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
 				"org/springframework/context/annotation/scopedProxyInterfacesTests.xml");
 		context.getBeanFactory().registerScope("myScope", new SimpleMapScope());
+
 		// should cast to the interface
 		FooService bean = (FooService) context.getBean("scopedProxyTestBean");
 		// should be dynamic proxy
@@ -86,6 +90,7 @@ public class ComponentScanParserScopedProxyTests {
 		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
 				"org/springframework/context/annotation/scopedProxyTargetClassTests.xml");
 		context.getBeanFactory().registerScope("myScope", new SimpleMapScope());
+
 		ScopedProxyTestBean bean = (ScopedProxyTestBean) context.getBean("scopedProxyTestBean");
 		// should be a class-based proxy
 		assertTrue(AopUtils.isCglibProxy(bean));
@@ -103,6 +108,7 @@ public class ComponentScanParserScopedProxyTests {
 		exception.expect(BeanDefinitionParsingException.class);
 		exception.expectMessage(containsString("Cannot define both 'scope-resolver' and 'scoped-proxy' on <component-scan> tag"));
 		exception.expectMessage(containsString("Offending resource: class path resource [org/springframework/context/annotation/scopedProxyInvalidConfigTests.xml]"));
+
 		new ClassPathXmlApplicationContext("org/springframework/context/annotation/scopedProxyInvalidConfigTests.xml");
 	}
 

spring-context/src/test/java/org/springframework/context/annotation/ComponentScanParserTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -145,9 +145,9 @@ public class ComponentScanParserTests {
 	}
 
 
-	@Target({ ElementType.TYPE, ElementType.FIELD })
+	@Target({ElementType.TYPE, ElementType.FIELD})
 	@Retention(RetentionPolicy.RUNTIME)
-	public static @interface CustomAnnotation {
+	public @interface CustomAnnotation {
 	}
 
 

spring-context/src/test/java/org/springframework/context/annotation/ComponentScanParserWithUserDefinedStrategiesTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -53,7 +53,7 @@ public class ComponentScanParserWithUserDefinedStrategiesTests {
 					"org/springframework/context/annotation/invalidConstructorNameGeneratorTests.xml");
 			fail("should have failed: no-arg constructor is required");
 		}
-		catch (BeansException e) {
+		catch (BeansException ex) {
 			// expected
 		}
 	}
@@ -65,7 +65,7 @@ public class ComponentScanParserWithUserDefinedStrategiesTests {
 					"org/springframework/context/annotation/invalidClassNameScopeResolverTests.xml");
 			fail("should have failed: no such class");
 		}
-		catch (BeansException e) {
+		catch (BeansException ex) {
 			// expected
 		}
 	}

spring-core/src/main/java/org/springframework/core/annotation/SynthesizedAnnotationInvocationHandler.java

@@ -60,6 +60,7 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 		this.attributeExtractor = attributeExtractor;
 	}
 
+
 	@Override
 	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
 		if (isEqualsMethod(method)) {
@@ -75,8 +76,8 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 			return annotationType();
 		}
 		if (!isAttributeMethod(method)) {
-			String msg = String.format("Method [%s] is unsupported for synthesized annotation type [%s]", method,
-				annotationType());
+			String msg = String.format("Method [%s] is unsupported for synthesized annotation type [%s]",
+					method, annotationType());
 			throw new AnnotationConfigurationException(msg);
 		}
 		return getAttributeValue(method);
@@ -92,9 +93,9 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 		if (value == null) {
 			value = this.attributeExtractor.getAttributeValue(attributeMethod);
 			if (value == null) {
-				throw new IllegalStateException(String.format(
-					"%s returned null for attribute name [%s] from attribute source [%s]",
-					this.attributeExtractor.getClass().getName(), attributeName, this.attributeExtractor.getSource()));
+				String msg = String.format("%s returned null for attribute name [%s] from attribute source [%s]",
+						this.attributeExtractor.getClass().getName(), attributeName, this.attributeExtractor.getSource());
+				throw new IllegalStateException(msg);
 			}
 
 			// Synthesize nested annotations before returning them.
@@ -200,7 +201,6 @@ class SynthesizedAnnotationInvocationHandler implements InvocationHandler {
 	 * in Spring's {@link ObjectUtils} because those hash code generation
 	 * algorithms do not comply with the requirements specified in
 	 * {@link Annotation#hashCode()}.
-	 *
 	 * @param array the array to compute the hash code for
 	 */
 	private int hashCodeForArray(Object array) {