Update pom.xml

compiler plugin config

jaxb-ri/pom.xml

diff --git a/jaxb-ri/pom.xml b/jaxb-ri/pom.xml
index 686a8d3..12864f7 100644
--- a/jaxb-ri/pom.xml
+++ b/jaxb-ri/pom.xml
@@ -428,6 +428,8 @@
                         <configuration>
                             <compilerArgument>-Xlint:all</compilerArgument>
                             <!--<XDignore.symbol.file/>-->
+                            <showDeprecation>true</showDeprecation>
+                            <showWarnings>true</showWarnings>
                         </configuration>
                     </execution>
                     <execution>
@@ -623,4 +625,4 @@
             </build>
         </profile>
     </profiles>
-</project>
\ No newline at end of file
+</project>