@@ -18,6 +18,17 @@
 </extension>
 </extensions>
 <plugins>
+<plugin>
+<groupId>org.apache.maven.plugins</groupId>
+<artifactId>maven-resources-plugin</artifactId>
+<executions>
+<execution>
+<goals>
+<goal>resources</goal>
+</goals>
+</execution>
+</executions>
+</plugin>
 <plugin>
 <artifactId>maven-javadoc-plugin</artifactId>
 <configuration>
@@ -94,6 +105,16 @@
 </executions>
 </plugin>
 </plugins>
+
+<resources>
+<resource>
+<directory>src/main/resources</directory>
+</resource>
+<resource>
+<directory>src/main/properties</directory>
+<filtering>true</filtering>
+</resource>
+</resources>
 </build>
 <dependencies>
 <dependency>

@@ -16,11 +16,11 @@
 
 import com.google.api.client.util.SecurityUtils;
 import com.google.common.annotations.VisibleForTesting;
-
 import java.io.IOException;
 import java.io.InputStream;
 import java.security.GeneralSecurityException;
 import java.security.KeyStore;
+import java.util.Properties;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -32,11 +32,8 @@
 */
 public final class GoogleUtils {
 
-// NOTE: toString() so compiler thinks it isn't a constant, so it won't inline it
-// {x-version-update-start:google-api-client:current}
 /** Current release version. */
-public static final String VERSION = "1.30.3".toString();
-// {x-version-update-end:google-api-client:current}
+public static final String VERSION = getVersion();
 
 // NOTE: Integer instead of int so compiler thinks it isn't a constant, so it won't inline it
 /**
@@ -91,5 +88,24 @@ public static synchronized KeyStore getCertificateTrustStore()
 return certTrustStore;
 }
 
+private static String getVersion() {
+String version = GoogleUtils.class.getPackage().getImplementationVersion();
+// in a non-packaged environment (local), there's no implementation version to read
+if (version == null) {
+// fall back to reading from a properties file - note this value is expected to be cached
+try (InputStream inputStream =
+GoogleUtils.class.getResourceAsStream("google-api-client.properties")) {
+if (inputStream != null) {
+Properties properties = new Properties();
+properties.load(inputStream);
+version = properties.getProperty("google-api-client.version");
+}
+} catch (IOException e) {
+// ignore
+}
+}
+return version;
+}
+
 private GoogleUtils() {}
 }

@@ -0,0 +1 @@
+google-api-client.version=${project.version}

@@ -56,4 +56,12 @@ public void testVersionMatcherSnapshot() {
 assertEquals(30, Integer.parseInt(matcher.group(2)));
 assertEquals(3, Integer.parseInt(matcher.group(3)));
 }
+
+public void testVersion() {
+Matcher matcher = GoogleUtils.VERSION_PATTERN.matcher(GoogleUtils.VERSION);
+assertTrue(matcher.find());
+assertNotNull(GoogleUtils.MAJOR_VERSION);
+assertNotNull(GoogleUtils.MINOR_VERSION);
+assertNotNull(GoogleUtils.BUGFIX_VERSION);
+}
 }

@@ -297,8 +297,9 @@
 </configuration>
 </plugin>
 <plugin>
+<groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-checkstyle-plugin</artifactId>
-<version>2.6</version>
+<version>3.1.0</version>
 </plugin>
 <plugin>
 <groupId>org.codehaus.mojo</groupId>
@@ -325,6 +326,11 @@
 <artifactId>maven-site-plugin</artifactId>
 <version>3.8.2</version>
 </plugin>
+<plugin>
+<groupId>org.apache.maven.plugins</groupId>
+<artifactId>maven-resources-plugin</artifactId>
+<version>3.1.0</version>
+</plugin>
 </plugins>
 </pluginManagement>
 <plugins>
@@ -412,22 +418,6 @@
 </execution>
 </executions>
 </plugin>
-<plugin>
-<groupId>org.apache.maven.plugins</groupId>
-<artifactId>maven-checkstyle-plugin</artifactId>
-<configuration>
-<configLocation>checkstyle.xml</configLocation>
-<consoleOutput>true</consoleOutput>
-<suppressionsLocation>${basedir}/../checkstyle-suppressions.xml</suppressionsLocation>
-</configuration>
-<executions>
-<execution>
-<goals>
-<goal>check</goal>
-</goals>
-</execution>
-</executions>
-</plugin>
 <plugin>
 <groupId>org.codehaus.mojo</groupId>
 <artifactId>findbugs-maven-plugin</artifactId>
@@ -546,5 +536,53 @@
 </plugins>
 </build>
 </profile>
+
+<!-- set project.root-directory property based on where we are -->
+<profile>
+<id>root-directory</id>
+<activation>
+<file>
+<exists>checkstyle-suppressions.xml</exists>
+</file>
+</activation>
+<properties>
+<project.root-directory>.</project.root-directory>
+</properties>
+</profile>
+
+<profile>
+<!-- Only run checkstyle plugin on Java 8+ (checkstyle artifact only supports Java 8+) -->
+<id>checkstyle-tests</id>
+<activation>
+<jdk>[1.8,)</jdk>
+</activation>
+<build>
+<plugins>
+<plugin>
+<groupId>org.apache.maven.plugins</groupId>
+<artifactId>maven-checkstyle-plugin</artifactId>
+<dependencies>
+<dependency>
+<groupId>com.puppycrawl.tools</groupId>
+<artifactId>checkstyle</artifactId>
+<version>8.23</version>
+</dependency>
+</dependencies>
+<configuration>
+<configLocation>checkstyle.xml</configLocation>
+<consoleOutput>true</consoleOutput>
+<suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
+</configuration>
+<executions>
+<execution>
+<goals>
+<goal>check</goal>
+</goals>
+</execution>
+</executions>
+</plugin>
+</plugins>
+</build>
+</profile>
 </profiles>
 </project>