Install Java on Ubuntu server (Parallels Plesk)

Question

I want to install Java to my server so I can use PHP shell_exec to compile Java online. So I'm trying to install Java on my webserver (Ubuntu - Parallels Plesk). I logged in to the server with PuTTY and tried some commands like:

sudo apt-get install openjdk-6-jre

or

sudo apt-get install oracle-java7-installer

But than I get error's like:

Package drweb-bases must be reinstalled, but there can be no archive found.

I tried to uninstall drweb-bases, reinstall, no matter what. I still get that error. What you I need to do? I am doing it completly wrong? Am I not destroying my webserver? There is not much to find on this topic on Google.

Solution

Download the Oracle java from its offical website

Download Java From Official website Here

Manually Install the JDK 1.7

#java -version

#sudo mkdir -p /usr/lib/jvm

#sudo mv jdk-7u21-linux-i586.tar.gz /usr/lib/jvm

#cd /usr/lib/jvm

#sudo tar zxvf jdk-7u21-linux-i586.tar.gz

#sudo rm jdk-7u21-linux-i586.tar.gz

#ls -l

#jdk1.7.0_21

#sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.7.0_21/bin/javac" 1

#sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.7.0_21/bin/java" 1

#sudo update-alternatives --set "javac" "/usr/lib/jvm/jdk1.7.0_21/bin/javac"

#sudo update-alternatives --set "java" "/usr/lib/jvm/jdk1.7.0_21/bin/java"

#sudo vi /etc/profile

Add the following entries to the bottom of your /etc/profile file:

#JAVA_HOME=/usr/lib/jvm/jdk1.7.0_21 PATH=$PATH:$JAVA_HOME/bin export JAVA_HOME export PATH

#. /etc/profile

#java -version

Replace the jdk1.7.0_21 With the version u have Downloaded

Comments

[Anwar]

If you need jdk, install openjdk-7-jdk package, provided you don't need specifically the oracle jdk.

[atMaarten]

I just want to install Java to my server so I can use PHP shell_exec to compile Java online.

[atMaarten]

That worked out great! java -version now gives in PuTTY the current java version back and I can compile and stuff. However when using $output = shell_exec('javac -version'); echo "<pre>$output</pre>"; in PHP it returns nothing nor it will compile. Any Thoughts?