Archive for 2012

How to Install JDK 7 on Ubuntu

There are several JDK implementations available for Linux, such as Oracle JDK 7, OpenJDK, Sun JDK 6, IBM JDK and GNU Java Compiler. We shall choose the Oracle JDK 7 (Ubuntu chooses OpenJDK as its default JDK, which is not 100% compatible with Oracle JDK).

Step 1 : Check if JDK has already been Installed
 
Open a Terminal or press Ctrl + Alt + T and issue this command:
 
javac -version
 
If a JDK version number (e.g., "javac 1.7.0_{xx}") appears, JDK has already been installed. You can skip the installation and goto step 3.
 
Step 2 : Download and Install JDK
 
Goto JDK (Java SE) download site at
Select "Java SE 7ux" ⇒ JDK ⇒ Download ⇒ "Accept Licence Agreement" ⇒ Select Linux x86 (for 32-bit system) or Linux x64 (for 64-bit system) "tar.gz" package, e.g., "jdk-7ux-linux-i586.tar.gz". The tarball will be stored in folder "~/Downloads", by default.
We shall install JDK under "/usr/lib/jvm". First, create a directory "jvm" under "/usr/lib" (with superuser authority "sudo"). Open a Terminal and issue these commands:
 
cd /usr/lib
sudo mkdir jvm
 

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How to Install NetBeans on Ubuntu

To use NetBeans for Java, PHP programming, you need to first install JDK. Read "How to install JDK on Ubuntu".

Step 1 : Download netbeans
 
Download NetBeans from http://netbeans.org/downloads/. Choose platform "Linux (x86/x64)" ⇒ "Java SE". You shall receive a sh file (e.g., "netbeans-7.x-ml-javase-linux.sh") in "~/Downloads".
Set the downloaded sh file to executable and run the sh file.


Step 2 : Install netbeans
 
Open a Terminal and type the following commands.
 
cd ~/Downloads
chmod a+x netbeans-7.x-ml-javase-linux.sh   // Set to executable for all (a+x)
./netbeans-7.x-ml-javase-linux.sh                   // Run
 
Follow the instructions to install NetBeans.


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How to install LAMP in ubuntu

 

Open terminal or press Ctrl + Alt +T and type the following command
 
sudo apt-get install lamp-server^
 

lamp 2


 
When you search for the name of the package that the given command seems to install cannot be found using apt-cache search. e.g. You will see this used most often when someone tells you how to install LAMP server setup (Linux-Apache-MySQL-PHP) by using the command “sudo apt-get install lamp-server^”. If you miss the caret at the end or try to search for lamp-server, it just doesn’t work.
 

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