Polishing

spring-beans/src/main/java/org/springframework/beans/factory/support/DefaultListableBeanFactory.java

@@ -96,8 +96,7 @@ import org.springframework.util.StringUtils;
  * operating on pre-resolved bean definition metadata objects.
  *
  * <p>Note that readers for specific bean definition formats are typically
- * implemented separately rather than as bean factory subclasses:
- * see for example {@link PropertiesBeanDefinitionReader} and
+ * implemented separately rather than as bean factory subclasses: see for example
  * {@link org.springframework.beans.factory.xml.XmlBeanDefinitionReader}.
  *
  * <p>For an alternative implementation of the
@@ -184,7 +183,7 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 	private volatile String[] frozenBeanDefinitionNames;
 
 	/** Whether bean definition metadata may be cached for all beans. */
-	private volatile boolean configurationFrozen = false;
+	private volatile boolean configurationFrozen;
 
 
 	/**
@@ -355,12 +354,11 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 	}
 
 	@Override
-	public <T> ObjectProvider<T> getBeanProvider(Class<T> requiredType) throws BeansException {
+	public <T> ObjectProvider<T> getBeanProvider(Class<T> requiredType)  {
 		Assert.notNull(requiredType, "Required type must not be null");
 		return getBeanProvider(ResolvableType.forRawClass(requiredType));
 	}
 
-	@SuppressWarnings("unchecked")
 	@Override
 	public <T> ObjectProvider<T> getBeanProvider(ResolvableType requiredType) {
 		return new BeanObjectProvider<T>() {
@@ -390,12 +388,14 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 			public T getIfUnique() throws BeansException {
 				return resolveBean(requiredType, null, true);
 			}
+			@SuppressWarnings("unchecked")
 			@Override
 			public Stream<T> stream() {
 				return Arrays.stream(getBeanNamesForTypedStream(requiredType))
 						.map(name -> (T) getBean(name))
 						.filter(bean -> !(bean instanceof NullBean));
 			}
+			@SuppressWarnings("unchecked")
 			@Override
 			public Stream<T> orderedStream() {
 				String[] beanNames = getBeanNamesForTypedStream(requiredType);