RATIS-1977. Improve Code.

Author: slfan1989

pom.xml

@@ -224,6 +224,7 @@
     <junit-bom.version>5.12.2</junit-bom.version>
     <mockito.version>4.11.0</mockito.version>
     <jacoco.version>0.8.12</jacoco.version>
+    <annotation.version>1.3.2</annotation.version>
     <flaky-test-groups>flaky | org.apache.ratis.test.tag.FlakyTest</flaky-test-groups>
   </properties>
 
@@ -430,6 +431,11 @@
         <artifactId>mockito-core</artifactId>
         <version>${mockito.version}</version>
       </dependency>
+      <dependency>
+        <groupId>javax.annotation</groupId>
+        <artifactId>javax.annotation-api</artifactId>
+        <version>${annotation.version}</version>
+      </dependency>
     </dependencies>
   </dependencyManagement>
 

ratis-proto/pom.xml

@@ -175,5 +175,9 @@
       <groupId>org.apache.ratis</groupId>
       <artifactId>ratis-thirdparty-misc</artifactId>
     </dependency>
+    <dependency>
+      <groupId>javax.annotation</groupId>
+      <artifactId>javax.annotation-api</artifactId>
+    </dependency>
   </dependencies>
 </project>