Set up sun-JDK and maven2 in Ubuntu

Environment Description: Ubuntu server 12.04/Java-6-sun-1.6.0.06/apache-maven-3.0.4

1. Install sun-JDK

Because sun-JDK has been acquired by Oracle, UBUNTU supports open source. Currently, there is no update source for the new version of Oracle Java JDK. Therefore, to install sun-JDK, you must only install the old version, you must update the Ubuntu download source as follows:

Installation required

> Apt-Get install Python-software-Properties

Update the download source of the sun-6-jre to sources. List
> Add-Apt-repository "Deb http://us.archive.ubuntu.com/ubuntu/ hard Multiverse"

Then you can directly install the SDK through the command line. Before installation, you must update the apt-Get update list.

> Apt-Get install sun-java6-jdk

In general, UBUNTU server will install openjdk by default, so here we want to change the JDK priority and command link as follows:

> Update-alternatives -- install/usr/bin/Java/usr/lib/JVM/Java-6-sun-1.6.0.06/bin/Java 300

> Update-alternatives -- install/usr/bin/javac/usr/lib/JVM/Java-6-sun-1.6.0.06/bin/javac 300

Next, modify the default JDK.

> Sudo Update-alternatives -- config java. Select the default JDK as follows:

There are 3 choices for the alternative Java (providing/usr/bin/Java ).

Selection path priority status
------------------------------------------------------------
0/usr/lib/JVM/java-6-openjdk-amd64/JRE/bin/Java 1061 Auto Mode
1/usr/lib/JVM/java-6-openjdk-amd64/JRE/bin/Java 1061 manual mode
* 2/usr/lib/JVM/Java-6-sun-1.6.0.06/bin/Java 300 manual mode
3/usr/lib/JVM/Java-6-sun/JRE/bin/Java 63 manual mode

Press enter to keep the current choice [*], or type selection number: select 2 here.

So far, sun-JDK is installed on/usr/lib/JVM/Java-6-sun-1.6.0.06 by default.

 

2. Install maven2

To begin

Upload apache-maven-3.0.4-bin.tar.gz to the/usr/share directory and decompress the package using the following command:

> Tar-zxvf apache-maven-3.0.4-bin.tar.gz to/usr/share/apache-maven-3.0.4

Now Maven installation is complete

 

3. Configure Java and Maven Environment Variables

> VI/etc/environment

Path = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games: $ java_home/bin: $ maven_home/bin"
Java_home =/usr/lib/JVM/Java-6-sun-1.6.0.06
Classpath =.: $ java_home/lib
Maven_home =/usr/share/apache-maven-3.0.4
Export java_home
Export maven_home
Export classpath
Export path

The path: $ java_home/bin: $ maven_home/bin can be a single column or a single row.

Save the changes, and re-set the environment variables to take effect.

> Source/etc/environment

 

4. Check whether Java and Maven configurations are successful.

> JAVA-version
Java version "1.6.0 _ 06"
Java (TM) se Runtime Environment (build 1.6.0 _ 06-b02)
Java hotspot (TM) 64-bit server VM (build 10.0-b22, mixed mode)

> MVN-version
Apache Maven 3.0.4 (r1232337; 08:44:56 + 0000)
Maven home:/usr/share/apache-maven-3.0.4
Java version: 1.6.0 _ 06, vendor: Sun Microsystems Inc.
Java home:/usr/lib/JVM/Java-6-sun-1.6.0.06/JRE
Default locale: en_us, platform encoding: UTF-8
OS name: "Linux", version: "3.2.0-24-virtual", arch: "amd64", family: "Unix"

This indicates that the Java and Maven environment is successfully configured!