Automated rollback of commit 0ee34d3. (#15707)

PiperOrigin-RevId: 603802046

Author: zhangskz

java/pom.xml

@@ -112,8 +112,8 @@
           <artifactId>maven-compiler-plugin</artifactId>
           <version>3.6.1</version>
           <configuration>
-            <source>1.7</source>
-            <target>1.7</target>
+            <source>1.8</source>
+            <target>1.8</target>
           </configuration>
         </plugin>
         <plugin>