Update java pom.xml file to allow flatbuffers-java maven package to be compiled under java 8, and pulled in as a dependency to a project using java 8. (#7893) (#7894)

Co-authored-by: Derek Bailey <derekbailey@google.com>
Co-authored-by: Paulo Pinheiro <paulovictor.pinheiro@gmail.com>

1 files changed, 110 insertions, 86 deletions

diff --git a/java/pom.xml b/java/pom.xml
index 43e42bc3..11301d7f 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -59,15 +59,91 @@
   <build>
     <plugins>
       <plugin>
-        <artifactId>maven-compiler-plugin</artifactId>
+        <artifactId>maven-surefire-plugin</artifactId>
         <configuration>
-          <release>8</release>
-          <testExcludes>
-            <testExclude>MyGame/Example/MonsterStorageGrpc.java</testExclude>
-            <testExclude>MyGame/OtherNameSpace/TableBT.java</testExclude>
-          </testExcludes>
+          <includes>
+            <include>**/*Test.java</include>
+          </includes>
+        </configuration>
+        <version>2.22.2</version>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-source-plugin</artifactId>
+        <version>3.2.1</version>
+        <executions>
+          <execution>
+            <id>attach-sources</id>
+            <goals>
+              <goal>jar</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-javadoc-plugin</artifactId>
+        <version>3.3.0</version>
+        <configuration>
+          <additionalparam>-Xdoclint:none</additionalparam>
+          <additionalOptions>-Xdoclint:none</additionalOptions>
+        </configuration>
+        <executions>
+          <execution>
+            <id>attach-javadocs</id>
+            <goals>
+              <goal>jar</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.felix</groupId>
+        <artifactId>maven-bundle-plugin</artifactId>
+        <version>5.1.2</version>
+        <extensions>true</extensions>
+      </plugin>
+      <plugin>
+        <groupId>org.sonatype.plugins</groupId>
+        <artifactId>nexus-staging-maven-plugin</artifactId>
+        <version>1.6.8</version>
+        <extensions>true</extensions>
+        <configuration>
+          <serverId>ossrh</serverId>
+          <nexusUrl>https://oss.sonatype.org/</nexusUrl>
+          <autoReleaseAfterClose>true</autoReleaseAfterClose>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-gpg-plugin</artifactId>
+        <version>3.0.1</version>
+        <executions>
+          <execution>
+            <id>sign-artifacts</id>
+            <phase>verify</phase>
+            <goals>
+              <goal>sign</goal>
+            </goals>
+            <configuration>
+              <gpgArguments>
+                <arg>--pinentry-mode</arg>
+                <arg>loopback</arg>
+              </gpgArguments>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-release-plugin</artifactId>
+        <version>2.5.3</version>
+        <configuration>
+          <autoVersionSubmodules>true</autoVersionSubmodules>
+          <useReleaseProfile>false</useReleaseProfile>
+          <releaseProfiles>release</releaseProfiles>
+          <goals>deploy</goals>
         </configuration>
-        <version>3.8.1</version>
       </plugin>
     </plugins>
   </build>
@@ -80,91 +156,39 @@
       <build>
         <plugins>
           <plugin>
-            <artifactId>maven-surefire-plugin</artifactId>
-            <configuration>
-              <includes>
-                <include>**/*Test.java</include>
-              </includes>
-            </configuration>
-            <version>2.22.2</version>
-          </plugin>
-          <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-source-plugin</artifactId>
-            <version>3.2.1</version>
-            <executions>
-              <execution>
-                <id>attach-sources</id>
-                <goals>
-                  <goal>jar</goal>
-                </goals>
-              </execution>
-            </executions>
-          </plugin>
-          <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-javadoc-plugin</artifactId>
-            <version>3.3.0</version>
-            <configuration>
-              <additionalparam>-Xdoclint:none</additionalparam>
-              <additionalOptions>-Xdoclint:none</additionalOptions>
-            </configuration>
-            <executions>
-              <execution>
-                <id>attach-javadocs</id>
-                <goals>
-                  <goal>jar</goal>
-                </goals>
-              </execution>
-            </executions>
-          </plugin>
-          <plugin>
-            <groupId>org.apache.felix</groupId>
-            <artifactId>maven-bundle-plugin</artifactId>
-            <version>5.1.2</version>
-            <extensions>true</extensions>
-          </plugin>
-          <plugin>
-            <groupId>org.sonatype.plugins</groupId>
-            <artifactId>nexus-staging-maven-plugin</artifactId>
-            <version>1.6.8</version>
-            <extensions>true</extensions>
+            <artifactId>maven-compiler-plugin</artifactId>
             <configuration>
-              <serverId>ossrh</serverId>
-              <nexusUrl>https://oss.sonatype.org/</nexusUrl>
-              <autoReleaseAfterClose>true</autoReleaseAfterClose>
+              <release>8</release>
+              <testExcludes>
+                <testExclude>MyGame/Example/MonsterStorageGrpc.java</testExclude>
+                <testExclude>MyGame/OtherNameSpace/TableBT.java</testExclude>
+              </testExcludes>
             </configuration>
+            <version>3.8.1</version>
           </plugin>
+        </plugins>
+      </build>
+    </profile>
+    <profile>
+      <id>jdk8</id>
+      <activation>
+        <jdk>1.8</jdk>
+      </activation>
+      <properties>
+        <maven.compiler.target>8</maven.compiler.target>
+        <maven.compiler.source>8</maven.compiler.source>
+      </properties>
+      <build>
+        <plugins>
           <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-gpg-plugin</artifactId>
-            <version>3.0.1</version>
-            <executions>
-              <execution>
-                <id>sign-artifacts</id>
-                <phase>verify</phase>
-                <goals>
-                  <goal>sign</goal>
-                </goals>
-                <configuration>
-                  <gpgArguments>
-                    <arg>--pinentry-mode</arg>
-                    <arg>loopback</arg>
-                  </gpgArguments>
-                </configuration>
-              </execution>
-            </executions>
-          </plugin>
-          <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-release-plugin</artifactId>
-            <version>2.5.3</version>
+            <artifactId>maven-compiler-plugin</artifactId>
             <configuration>
-              <autoVersionSubmodules>true</autoVersionSubmodules>
-              <useReleaseProfile>false</useReleaseProfile>
-              <releaseProfiles>release</releaseProfiles>
-              <goals>deploy</goals>
+              <testExcludes>
+                <testExclude>MyGame/Example/MonsterStorageGrpc.java</testExclude>
+                <testExclude>MyGame/OtherNameSpace/TableBT.java</testExclude>
+              </testExcludes>
             </configuration>
+            <version>3.8.1</version>
           </plugin>
         </plugins>
       </build>