How to enable java 7 in maven of Apache Storm 0.9.3 - maven

Question

I'm currently using Apache Storm 0.9.3 in Ubuntu 14.04 LTS. I encounter that the maven compiler in Apache Storm 0.9.3 keep on using Java 6 although I had installed Java 7.
The Java version in my Ubuntu:
java version "1.7.0_80"
Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
Java HotSpot(TM) Client VM (build 24.80-b11, mixed mode)
The Maven version in my Ubuntu:
Apache Maven 3.0.5
Maven home: /usr/share/maven
Java version: 1.7.0_80, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-7-oracle/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.13.0-52-generic", arch: "i386", family: "unix"
Below are the error I encounter:
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for org.apache.storm:storm-starter:jar:0.9.3
[WARNING] 'reporting.plugins.plugin.version' for org.apache.maven.plugins:maven-javadoc-plugin is missing. # org.apache.storm:storm:0.9.3, /home/user/.m2/repository/org/apache/storm/storm/0.9.3/storm-0.9.3.pom, line 694, column 21
[WARNING] 'reporting.plugins.plugin.version' for org.apache.maven.plugins:maven-surefire-report-plugin is missing. # org.apache.storm:storm:0.9.3, /home/user/.m2/repository/org/apache/storm/storm/0.9.3/storm-0.9.3.pom, line 660, column 21
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building storm-starter 0.9.3
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-remote-resources-plugin:1.2.1:process (default) # storm-starter ---
[INFO]
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) # storm-starter ---
[debug] execute contextualize
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 8 resources
[INFO] Copying 3 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) # storm-starter ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 48 source files to /home/user/storm/examples/storm-starter/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /home/user/storm/examples/storm-starter/src/jvm/storm/starter/bolt/PNMSTD.java:[79,19] strings in switch are not supported in -source 1.6
(use -source 7 or higher to enable strings in switch)
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 17.856s
[INFO] Finished at: Sun May 31 06:55:27 MYT 2015
[INFO] Final Memory: 18M/51M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project storm-starter: Compilation failure
[ERROR] /home/user/storm/examples/storm-starter/src/jvm/storm/starter/bolt/PNMSTD.java:[79,19] strings in switch are not supported in -source 1.6
[ERROR] (use -source 7 or higher to enable strings in switch)
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
Below are part of /home/user/.m2/repository/org/apache/storm/storm/0.9.3/storm-0.9.3.pom related to maven:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<prerequisites>
<maven>3.0.0</maven>
</prerequisites>
<modules>
<module>storm-buildtools/maven-shade-clojure-transformer</module>
<module>storm-core</module>
<module>examples/storm-starter</module>
<module>external/storm-kafka</module>
<module>external/storm-hdfs</module>
<module>external/storm-hbase</module>
</modules>
<profiles>
<profile>
<id>sign</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-gpg-plugin</artifactId>
<executions>
<execution>
<id>sign-artifacts</id>
<phase>verify</phase>
<goals>
<goal>sign</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>dist</id>
<modules>
<module>storm-dist/binary</module>
<module>storm-dist/source</module>
</modules>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<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>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<configuration>
<archive>
<manifest>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<distributionManagement>
<site>
<id>storm.maven.website</id>
<name>Storm Website</name>
<url>file:///tmp/site</url>
</site>
</distributionManagement>
<repositories>
<repository>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>central</id>
<url>http://repo1.maven.org/maven2/</url>
</repository>
<repository>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
<id>clojars</id>
<url>https://clojars.org/repo/</url>
</repository>
</repositories>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2.2</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-install-plugin</artifactId>
<version>2.4</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<version>2.2.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>2.5</version>
</plugin>
<plugin>
<groupId>com.theoryinpractise</groupId>
<artifactId>clojure-maven-plugin</artifactId>
<version>1.3.18</version>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-report-plugin</artifactId>
<version>2.16</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-gpg-plugin</artifactId>
<version>1.4</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.2</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-project-info-reports-plugin</artifactId>
<version>2.7</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.3</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<configuration>
<autoVersionSubmodules>true</autoVersionSubmodules>
<tagNameFormat>v#{project.version}</tagNameFormat>
</configuration>
</plugin>
<plugin>
<groupId>com.theoryinpractise</groupId>
<artifactId>clojure-maven-plugin</artifactId>
<extensions>true</extensions>
</plugin>
</plugins>
</build>
<reporting>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>2.11</version>
<reportSets>
<reportSet>
<reports>
<report>checkstyle</report>
</reports>
</reportSet>
</reportSets>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-pmd-plugin</artifactId>
<version>3.0.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-report-plugin</artifactId>
<configuration>
<reportsDirectories>
<file>${project.build.directory}/test-reports</file>
<file>${project.build.directory}/surefire-reports</file>
</reportsDirectories>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>taglist-maven-plugin</artifactId>
<version>2.4</version>
<configuration>
<tagListOptions>
<tagClasses>
<tagClass>
<displayName>Todo Work</displayName>
<tags>
<tag>
<matchString>TODO</matchString>
<matchType>exact</matchType>
</tag>
<tag>
<matchString>FIXME</matchString>
<matchType>exact</matchType>
</tag>
</tags>
</tagClass>
</tagClasses>
</tagListOptions>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.rat</groupId>
<artifactId>apache-rat-plugin</artifactId>
<version>0.11</version>
<configuration>
<excludeSubProjects>false</excludeSubProjects>
<excludes>
<!-- exclude maven artifacts -->
<exclude>**/target/**</exclude>
<!-- exclude intellij projects -->
<exclude>**/*.iml</exclude>
<!-- exclude CHANGELOG, VERSION, AND TODO files -->
<exclude>**/CHANGELOG.md</exclude>
<exclude>**/README.md</exclude>
<exclude>**/README.markdown</exclude>
<exclude>**/DEVELOPER.md</exclude>
<exclude>**/BYLAWS.md</exclude>
<exclude>**/STORM-UI-REST-API.md</exclude>
<exclude>SECURITY.md</exclude>
<exclude>VERSION</exclude>
<exclude>TODO</exclude>
<!-- thrift-generated code -->
<exclude>**/src/py/**</exclude>
<!-- the following are in the LICENSE file -->
<exclude>**/src/ui/public/js/jquery-1.6.2.min.js</exclude>
<exclude>**/src/ui/public/js/jquery.cookies.2.2.0.min.js</exclude>
<exclude>**/src/ui/public/js/jquery.tablesorter.min.js</exclude>
<exclude>**/src/ui/public/js/moment.min.js</exclude>
<exclude>**/src/ui/public/js/jquery.blockUI.min.js</exclude>
<exclude>**/src/ui/public/js/url.min.js</exclude>
<exclude>**/src/ui/public/js/arbor.js</exclude>
<exclude>**/src/ui/public/js/arbor-graphics.js</exclude>
<exclude>**/src/ui/public/js/arbor-tween.js</exclude>
<exclude>**/src/ui/public/js/jquery.mustache.js</exclude>
<exclude>**/src/ui/public/js/purl.js</exclude>
<!-- generated by shade plugin -->
<exclude>**/dependency-reduced-pom.xml</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</reporting>

Answer 1

Firstly you must have installed the Java 7.
As indicated in
[WARNING] 'reporting.plugins.plugin.version' for org.apache.maven.plugins:maven-javadoc-plugin is missing. # org.apache.storm:storm:0.9.3, /home/user/.m2/repository/org/apache/storm/storm/0.9.3/storm-0.9.3.pom, line 694, column 21
[WARNING] 'reporting.plugins.plugin.version' for org.apache.maven.plugins:maven-surefire-report-plugin is missing. # org.apache.storm:storm:0.9.3, /home/user/.m2/repository/org/apache/storm/storm/0.9.3/storm-0.9.3.pom, line 660, column 21
Go to your home directory and cd to /.m2/repository/org/apache/storm/storm/0.9.3/ then nano or vi storm-0.9.3.pom.
Search for
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
modified the 1.6 to 1.7 if you intend to use java-7-oracle. If you're using nano, you can easily search using Ctrl+W <source>1.6</source>