add ISE javadoc for setTrailerFields

shingwaichan · shingwaichan · commit 76de60a8180a · 2017-05-26T12:04:33.000-07:00
diff --git a/src/main/java/javax/servlet/http/HttpServletResponse.java b/src/main/java/javax/servlet/http/HttpServletResponse.java
@@ -474,6 +474,12 @@ public interface HttpServletResponse extends ServletResponse {
      *
      * @param supplier the supplier of trailer headers
      *
+     * @exception IllegalStateException if it is invoked after the response has
+     *         has been committed,
+     *         or the trailer is not supported in the request, for instance,
+     *         the underlying protocol is HTTP 1.0, or the response is not
+     *         in chunked encoding in HTTP 1.1.
+     *
      * @since Servlet 4.0
      */
     default public void setTrailerFields(Supplier<Map<String, String>> supplier) {

Original file line number	Diff line number	Diff line change
`@@ -474,6 +474,12 @@ public interface HttpServletResponse extends ServletResponse {`
`474`	`474`	`*`
`475`	`475`	`* @param supplier the supplier of trailer headers`
`476`	`476`	`*`
	`477`	`+ * @exception IllegalStateException if it is invoked after the response has`
	`478`	`+ * has been committed,`
	`479`	`+ * or the trailer is not supported in the request, for instance,`
	`480`	`+ * the underlying protocol is HTTP 1.0, or the response is not`
	`481`	`+ * in chunked encoding in HTTP 1.1.`
	`482`	`+ *`
`477`	`483`	`* @since Servlet 4.0`
`478`	`484`	`*/`
`479`	`485`	`default public void setTrailerFields(Supplier<Map<String, String>> supplier) {`