ResponseEntity provides static "notFound()" convenience method as well

Issue: SPR-12070

spring-web/src/main/java/org/springframework/http/ResponseEntity.java

@@ -155,12 +155,14 @@ public class ResponseEntity<T> extends HttpEntity<T> {
 		return builder.toString();
 	}
 
+
 	// Static builder methods
 
 	/**
 	 * Creates a builder with the given status.
 	 * @param status the response status
 	 * @return the created builder
+	 * @since 4.1
 	 */
 	public static BodyBuilder status(HttpStatus status) {
 		return new DefaultBuilder(status);
@@ -170,6 +172,7 @@ public class ResponseEntity<T> extends HttpEntity<T> {
 	 * Creates a builder with the given status.
 	 * @param status the response status
 	 * @return the created builder
+	 * @since 4.1
 	 */
 	public static BodyBuilder status(int status) {
 		return status(HttpStatus.valueOf(status));
@@ -178,6 +181,7 @@ public class ResponseEntity<T> extends HttpEntity<T> {
 	/**
 	 * Creates a builder with the status set to {@linkplain HttpStatus#OK OK}.
 	 * @return the created builder
+	 * @since 4.1
 	 */
 	public static BodyBuilder ok() {
 		return status(HttpStatus.OK);
@@ -187,6 +191,7 @@ public class ResponseEntity<T> extends HttpEntity<T> {
 	 * A shortcut for creating a {@code ResponseEntity} with the given body and
 	 * status set to {@linkplain HttpStatus#OK OK}.
 	 * @return the created {@code ResponseEntity}
+	 * @since 4.1
 	 */
 	public static <T> ResponseEntity<T> ok(T body) {
 		BodyBuilder builder = ok();
@@ -198,6 +203,7 @@ public class ResponseEntity<T> extends HttpEntity<T> {
 	 * status and a location header set to the given URI.
 	 * @param location the location URI
 	 * @return the created builder
+	 * @since 4.1
 	 */
 	public static BodyBuilder created(URI location) {
 		BodyBuilder builder = status(HttpStatus.CREATED);
@@ -207,6 +213,7 @@ public class ResponseEntity<T> extends HttpEntity<T> {
 	/**
 	 * Creates a builder with an {@link HttpStatus#ACCEPTED ACCEPTED} status.
 	 * @return the created builder
+	 * @since 4.1
 	 */
 	public static BodyBuilder accepted() {
 		return status(HttpStatus.ACCEPTED);
@@ -215,11 +222,21 @@ public class ResponseEntity<T> extends HttpEntity<T> {
 	/**
 	 * Creates a builder with a {@link HttpStatus#NO_CONTENT NO_CONTENT} status.
 	 * @return the created builder
+	 * @since 4.1
 	 */
 	public static HeadersBuilder<?> noContent() {
 		return status(HttpStatus.NO_CONTENT);
 	}
 
+	/**
+	 * Creates a builder with a {@link HttpStatus#NOT_FOUND NOT_FOUND} status.
+	 * @return the created builder
+	 * @since 4.1
+	 */
+	public static HeadersBuilder<?> notFound() {
+		return status(HttpStatus.NOT_FOUND);
+	}
+
 
 	/**
 	 * Defines a builder that adds headers to the response entity.

spring-web/src/test/java/org/springframework/http/ResponseEntityTests.java

@@ -20,9 +20,13 @@ import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.List;
 
-import static org.junit.Assert.*;
 import org.junit.Test;
 
+import static org.junit.Assert.*;
+
+/**
+ * @author Arjen Poutsma
+ */
 public class ResponseEntityTests {
 
 	@Test
@@ -97,6 +101,15 @@ public class ResponseEntityTests {
 		assertNull(responseEntity.getBody());
 	}
 
+	@Test
+	public void notFound() throws URISyntaxException {
+		ResponseEntity<Void> responseEntity = ResponseEntity.notFound().build();
+
+		assertNotNull(responseEntity);
+		assertEquals(HttpStatus.NOT_FOUND, responseEntity.getStatusCode());
+		assertNull(responseEntity.getBody());
+	}
+
 	@Test
 	public void headers() throws URISyntaxException {
 		String eTag = "\"foo\"";