Installation of JDK, Eclipse, ADT, CDT, Pydev in Ubuntu 12.04 LTS (64bit) environment

I. In friendlyarm,tiny4412, the installation package can be supplemented by:
Install the JDK (Java), select the desired JDK, or install it all . a) OpenJDK-6.0
   

1. $ sudo apt-get update
2. $ sudo apt-get install openjdk-6-jdk

b) OpenJDK-7.0

1. $ sudo apt-get update
2. $ sudo apt-get install openjdk-7-jdk

c) SunJDK-6.0

1. $ sudo add-apt-repository "Deb Http://archive.canonical.com/ubuntu precise partner"
2. $ sudo apt-get update
3. $ sudo apt-get install sun-java6-jdk

d) OracleJDK-8.0

1. sudo add-apt-repository Ppa:webupd8team/java
2. sudo apt-get update
3. sudo apt-get install Oracle-java8-installer

e) Set the default JDK

1. $ sudo update-alternatives--config java
2. $ sudo update-alternatives--config javac

PS) If you need to uninstall the JDK installed through Apt-get, the command is as follows

1. $ sudo apt-get remove--purge XXX

Edit environment variable: sudo gedit/etc/environment

JDK version view: java-version

Installation of JDK, Eclipse, ADT, CDT, Pydev in Ubuntu 12.04 LTS (64bit) environment