BOOKKEEPER-932: Move to JDK 8

Author: Matteo Merli <mmerli@apache.org>

Reviewers: Sijie Guo <sijie@apache.org>

Closes #48 from merlimat/bk-932
diff --git a/pom.xml b/pom.xml
index 4f40773..27ffbf0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -52,14 +52,14 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>findbugs-maven-plugin</artifactId>
-        <version>2.5.2</version>
+        <version>3.0.3</version>
       </plugin>
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.0</version>
+        <version>3.5.1</version>
         <configuration>
-          <source>1.7</source>
-          <target>1.7</target>
+          <source>1.8</source>
+          <target>1.8</target>
           <compilerArguments>
 	    <Werror />
 	    <Xlint:deprecation />
@@ -81,8 +81,10 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>2.8</version>
+        <version>2.10.3</version>
         <configuration>
+          <!-- Avoid for missing javadoc comments to be marked as errors -->
+          <additionalparam>-Xdoclint:none</additionalparam>
           <subpackages>org.apache.bookkeeper.client:org.apache.bookkeeper.conf</subpackages>
           <groups>
             <group>