Remove unneeded `@NonNull` annotations

See gh-28797

spring-beans/src/main/java/org/springframework/beans/SimpleBeanInfoFactory.java

@@ -23,8 +23,6 @@ import java.beans.PropertyDescriptor;
 import java.beans.SimpleBeanInfo;
 import java.util.Collection;
 
-import org.jspecify.annotations.NonNull;
-
 import org.springframework.core.Ordered;
 
 /**
@@ -48,7 +46,7 @@ import org.springframework.core.Ordered;
 class SimpleBeanInfoFactory implements BeanInfoFactory, Ordered {
 
 	@Override
-	public @NonNull BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException {
+	public BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException {
 		Collection<? extends PropertyDescriptor> pds =
 				PropertyDescriptorUtils.determineBasicProperties(beanClass);
 

spring-beans/src/main/java/org/springframework/beans/StandardBeanInfoFactory.java

@@ -20,8 +20,6 @@ import java.beans.BeanInfo;
 import java.beans.IntrospectionException;
 import java.beans.Introspector;
 
-import org.jspecify.annotations.NonNull;
-
 import org.springframework.core.Ordered;
 import org.springframework.core.SpringProperties;
 
@@ -67,7 +65,7 @@ public class StandardBeanInfoFactory implements BeanInfoFactory, Ordered {
 
 
 	@Override
-	public @NonNull BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException {
+	public BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException {
 		BeanInfo beanInfo = (shouldIntrospectorIgnoreBeaninfoClasses ?
 				Introspector.getBeanInfo(beanClass, Introspector.IGNORE_ALL_BEANINFO) :
 				Introspector.getBeanInfo(beanClass));

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

@@ -16,8 +16,6 @@
 
 package org.springframework.beans.factory.support;
 
-import org.jspecify.annotations.NonNull;
-
 import org.springframework.beans.factory.BeanDefinitionStoreException;
 import org.springframework.beans.factory.config.BeanDefinition;
 
@@ -76,7 +74,7 @@ public class BeanDefinitionOverrideException extends BeanDefinitionStoreExceptio
 	 * Return the description of the resource that the bean definition came from.
 	 */
 	@Override
-	public @NonNull String getResourceDescription() {
+	public String getResourceDescription() {
 		return String.valueOf(super.getResourceDescription());
 	}
 
@@ -84,7 +82,7 @@ public class BeanDefinitionOverrideException extends BeanDefinitionStoreExceptio
 	 * Return the name of the bean.
 	 */
 	@Override
-	public @NonNull String getBeanName() {
+	public String getBeanName() {
 		return String.valueOf(super.getBeanName());
 	}
 

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

@@ -26,7 +26,6 @@ import java.util.Set;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.jspecify.annotations.NonNull;
 
 import org.springframework.beans.factory.BeanDefinitionStoreException;
 import org.springframework.beans.factory.annotation.AnnotatedBeanDefinition;
@@ -448,7 +447,7 @@ class ConfigurationClassBeanDefinitionReader {
 		}
 
 		@Override
-		public @NonNull MethodMetadata getFactoryMethodMetadata() {
+		public MethodMetadata getFactoryMethodMetadata() {
 			return this.factoryMethodMetadata;
 		}
 

spring-context/src/main/java/org/springframework/scheduling/annotation/AsyncConfigurationSelector.java

@@ -16,8 +16,6 @@
 
 package org.springframework.scheduling.annotation;
 
-import org.jspecify.annotations.NonNull;
-
 import org.springframework.context.annotation.AdviceMode;
 import org.springframework.context.annotation.AdviceModeImportSelector;
 
@@ -44,7 +42,7 @@ public class AsyncConfigurationSelector extends AdviceModeImportSelector<EnableA
 	 * respectively.
 	 */
 	@Override
-	public @NonNull String[] selectImports(AdviceMode adviceMode) {
+	public String[] selectImports(AdviceMode adviceMode) {
 		return switch (adviceMode) {
 			case PROXY -> new String[] {ProxyAsyncConfiguration.class.getName()};
 			case ASPECTJ -> new String[] {ASYNC_EXECUTION_ASPECT_CONFIGURATION_CLASS_NAME};

spring-context/src/main/java/org/springframework/validation/MapBindingResult.java

@@ -19,7 +19,6 @@ package org.springframework.validation;
 import java.io.Serializable;
 import java.util.Map;
 
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 import org.springframework.util.Assert;
@@ -62,7 +61,7 @@ public class MapBindingResult extends AbstractBindingResult implements Serializa
 	}
 
 	@Override
-	public final @NonNull Object getTarget() {
+	public final Object getTarget() {
 		return this.target;
 	}
 

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

@@ -22,7 +22,6 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 import org.springframework.core.BridgeMethodResolver;
@@ -264,7 +263,7 @@ public class AnnotatedMethod {
 		}
 
 		@Override
-		public @NonNull Method getMethod() {
+		public Method getMethod() {
 			return AnnotatedMethod.this.getBridgedMethod();
 		}
 

spring-jdbc/src/main/java/org/springframework/jdbc/core/namedparam/BeanPropertySqlParameterSource.java

@@ -20,7 +20,6 @@ import java.beans.PropertyDescriptor;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 import org.springframework.beans.BeanWrapper;
@@ -90,7 +89,7 @@ public class BeanPropertySqlParameterSource extends AbstractSqlParameterSource {
 	}
 
 	@Override
-	public @NonNull String[] getParameterNames() {
+	public String[] getParameterNames() {
 		return getReadablePropertyNames();
 	}
 

spring-jdbc/src/main/java/org/springframework/jdbc/core/namedparam/MapSqlParameterSource.java

@@ -20,7 +20,6 @@ import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.Map;
 
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 import org.springframework.jdbc.core.SqlParameterValue;
@@ -174,7 +173,7 @@ public class MapSqlParameterSource extends AbstractSqlParameterSource {
 	}
 
 	@Override
-	public @NonNull String[] getParameterNames() {
+	public String[] getParameterNames() {
 		return StringUtils.toStringArray(this.values.keySet());
 	}
 

spring-r2dbc/src/main/java/org/springframework/r2dbc/core/binding/Bindings.java

@@ -26,7 +26,6 @@ import java.util.Spliterator;
 import java.util.function.Consumer;
 
 import io.r2dbc.spi.Statement;
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 import org.springframework.util.Assert;
@@ -206,7 +205,7 @@ public class Bindings implements Iterable<Bindings.Binding> {
 		}
 
 		@Override
-		public @NonNull Object getValue() {
+		public Object getValue() {
 			return this.value;
 		}
 

spring-test/src/main/java/org/springframework/mock/web/MockMultipartFile.java

@@ -21,7 +21,6 @@ import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 import org.springframework.util.Assert;
@@ -109,7 +108,7 @@ public class MockMultipartFile implements MultipartFile {
 	}
 
 	@Override
-	public @NonNull String getOriginalFilename() {
+	public String getOriginalFilename() {
 		return this.originalFilename;
 	}
 

spring-web/src/main/java/org/springframework/http/client/MultipartBodyBuilder.java

@@ -21,7 +21,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.function.Consumer;
 
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 import org.reactivestreams.Publisher;
 
@@ -379,7 +378,7 @@ public final class MultipartBodyBuilder {
 		 * Return the element type for the {@code Publisher} body.
 		 */
 		@Override
-		public @NonNull ResolvableType getResolvableType() {
+		public ResolvableType getResolvableType() {
 			return this.resolvableType;
 		}
 	}

spring-web/src/main/java/org/springframework/http/codec/xml/Jaxb2XmlDecoder.java

@@ -37,7 +37,6 @@ import jakarta.xml.bind.Unmarshaller;
 import jakarta.xml.bind.annotation.XmlRootElement;
 import jakarta.xml.bind.annotation.XmlSeeAlso;
 import jakarta.xml.bind.annotation.XmlType;
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 import org.reactivestreams.Publisher;
 import reactor.core.Exceptions;
@@ -172,7 +171,7 @@ public class Jaxb2XmlDecoder extends AbstractDecoder<Object> {
 	}
 
 	@Override
-	public @NonNull Object decode(DataBuffer dataBuffer, ResolvableType targetType,
+	public Object decode(DataBuffer dataBuffer, ResolvableType targetType,
 			@Nullable MimeType mimeType, @Nullable Map<String, Object> hints) throws DecodingException {
 
 		try {

spring-web/src/main/java/org/springframework/http/server/reactive/ServletServerHttpRequest.java

@@ -35,7 +35,6 @@ import jakarta.servlet.ServletInputStream;
 import jakarta.servlet.http.Cookie;
 import jakarta.servlet.http.HttpServletRequest;
 import org.apache.commons.logging.Log;
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 import reactor.core.publisher.Flux;
 
@@ -214,12 +213,12 @@ class ServletServerHttpRequest extends AbstractServerHttpRequest {
 	}
 
 	@Override
-	public @NonNull InetSocketAddress getLocalAddress() {
+	public InetSocketAddress getLocalAddress() {
 		return new InetSocketAddress(this.request.getLocalAddr(), this.request.getLocalPort());
 	}
 
 	@Override
-	public @NonNull InetSocketAddress getRemoteAddress() {
+	public InetSocketAddress getRemoteAddress() {
 		return new InetSocketAddress(this.request.getRemoteHost(), this.request.getRemotePort());
 	}
 

spring-web/src/main/java/org/springframework/web/util/HierarchicalUriComponents.java

@@ -29,7 +29,6 @@ import java.util.StringJoiner;
 import java.util.function.BiFunction;
 import java.util.function.UnaryOperator;
 
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 import org.springframework.util.Assert;
@@ -196,7 +195,7 @@ final class HierarchicalUriComponents extends UriComponents {
 	}
 
 	@Override
-	public @NonNull String getPath() {
+	public String getPath() {
 		return this.path.getPath();
 	}
 

spring-web/src/testFixtures/java/org/springframework/web/testfixture/servlet/MockMultipartFile.java

@@ -21,7 +21,6 @@ import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 
-import org.jspecify.annotations.NonNull;
 import org.jspecify.annotations.Nullable;
 
 import org.springframework.util.Assert;
@@ -109,7 +108,7 @@ public class MockMultipartFile implements MultipartFile {
 	}
 
 	@Override
-	public @NonNull String getOriginalFilename() {
+	public String getOriginalFilename() {
 		return this.originalFilename;
 	}