Ubuntu 12.04 Install JDK 6 for Android Source Code Builde

Install the Oracle JDK 6

http://askubuntu.com/questions/67909/how-do-i-install-oracles-jdk-6

Oracle themselves have the official guide to install their JDK - below is based upon those instructions.

• Download the 32bit or 64bit Linux "compressed binary file" - it has a ".bin" file extension
• Give it permissions to execute and extract it
  chmod a+x [version]-linux-i586.bin
./[version]-linux-i586.bin

During installation it will ask you to register - press ENTER. Firefox will open with the registration page. Registration is optional.
JDK 6 package is extracted into ./jdk1.6.0_x directory, for example ./jdk1.6.0_30.
Lets rename it:

JDK 6 
https://app.box.com/s/uar3raw5qh1w46bqnnnq

mv jdk1.6.0_30 java-6-oracle 

• Now move the JDK 6 directory to /usr/lib

sudo mkdir /usr/lib/jvm
sudo mv java-6-oracle /usr/lib/jvm

switch to Oracle JDK 6

download

https://app.box.com/s/uuaac6svwnmn4bx2qwki

webupd8.googlecode.com hosts a nice-easy script to help with this.

wget http://webupd8.googlecode.com/files/update-java-0.5b chmod +x update-java-0.5b sudo ./update-java-0.5b 

don't worry - 0.5b refers to the script version - not the version of java!
An alternative to this is to use the webupd8 ppa and the update-java package.

Finally test the switch has been successful:

java -version javac -version 

These should display the oracle version installed - 1.6.0_30

Ubuntu GNU/Linux 12.04 LTS (Precise Pangolin) released. I wanted to manually install the Sun JDK 6 and 7 on Ubuntu.
Installing Sun JDK 6 on Ubuntu 12.04:

• Download the sun jdk 6 bin from here.

• Make the bin file executeable:

chmod +x jdk-6u32-linux-x64.bin

• Extract the bin file:

./jdk-6u32-linux-x64.bin

• Move extracted folder to this location:

sudo mv jdk1.6.0_32 /usr/lib/jvm/

• Install new java source in system:

sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.6.0_32/bin/javac 1
sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.6.0_32/bin/java 1

• Choose default java:

sudo update-alternatives --config javac
sudo update-alternatives --config java

• java version test:

java -version

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Installing Sun JDK 7 on Ubuntu 12.04:

• Download the sun jdk 7 tar file from here
• Extract the tar file:

tar -xvzf jdk-7u4-linux-x64.tar.gz

• Move extracted folder to this location:

sudo mv jdk1.7.0_04 /usr/lib/jvm/

• Install new java source in system:

sudo update-alternatives --install /usr/bin/javac javac /usr/lib/jvm/jdk1.7.0_04/bin/javac 1
sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk1.7.0_04/bin/java 1

• Choose default java:

sudo update-alternatives --config javac
sudo update-alternatives --config java

• java version test:

java -version